{"product_id":"niqua-sf-tool-steel-burs-cup-bur","title":"Niqua® S(f) Tool Steel Burs Cup Bur","description":"\u003cp data-path-to-node=\"1\"\u003e\u003cspan class=\"\"\u003eRound claw tips smoothly,\u003c\/span\u003e form smooth hemispherical domes on wire ends, and machine clean concave recesses with chatter-free rotary control. Manufactured to Swiss-Made precision standards for NIQUA, the NIQUA® SUPER Q® Cup Bur \/ Hollow Bur \"S(f)\" (Hohlfräser) is an essential rotary tool engineered for diamond setters, goldsmiths, and high-end jewelry manufacturers.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003eFeaturing an internal concave hemispherical cavity lined with precision-ground radial flutes and a fine cut (f), this hollow bur caps prongs, rivets, and bezel corners in a single fluid operation. When placed over an uneven or clipped wire stem, the concave cutting chamber shaves down excess height while simultaneously shaping a smooth, rounded dome that will not snag on clothing or scrape skin. Machined from premium hardened tool steel, each bur delivers clean chip evacuation and dependable edge retention in soft, ductile alloys including yellow gold, sterling silver, copper, brass, and related non-ferrous metals. Mounted on an industry-standard 2.35 mm (3\/32\") shank, these cup burs fit directly into jeweler flexible shaft handpieces, precision micromotors, and quick-change bench systems. Available in a comprehensive size progression from 0.80 mm to 6.00 mm (Item Numbers: 03 230 008), each size is packaged in a bench storage box containing 6 pieces.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"4\"\u003eWhy Choose NIQUA® SUPER Q® S(f) Cup \/ Hollow Burs\u003c\/h3\u003e\n\u003cul data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,0,0\"\u003e\u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"0\"\u003ePrecision Hemispherical Cavity:\u003c\/b\u003e\u003cspan\u003e Internal cup profile forms consistent,\u003c\/span\u003e\u003cspan\u003e smooth rounded heads on prongs,\u003c\/span\u003e\u003cspan\u003e posts,\u003c\/span\u003e\u003cspan\u003e and wire ends without flattening the sides.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,1,0\"\u003e\u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"0\"\u003eFine Cut (f) Internal Fluting:\u003c\/b\u003e\u003cspan\u003e Closer,\u003c\/span\u003e\u003cspan\u003e finer radial flutes shear ductile metal smoothly,\u003c\/span\u003e\u003cspan\u003e preventing aggressive grabbing or twisting of delicate micro-claws.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,0\"\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"0\"\u003eDual Functionality (Capping \u0026amp; Hollowing):\u003c\/b\u003e\u003cspan\u003e Rounds protruding wire ends externally while the rounded outer head can be used for light concave recessing and cavity smoothing.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,3,0\"\u003e\u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"0\"\u003eLow-Vibration Concentric Operation:\u003c\/b\u003e\u003cspan\u003e Precision-machined Swiss tool steel core minimizes radial runout,\u003c\/span\u003e\u003cspan\u003e ensuring smooth running and preventing tool bounce against delicate gemstone tables.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,4,0\"\u003e\u003cb data-path-to-node=\"5,4,0\" data-index-in-node=\"0\"\u003eOptimized Chip Clearance:\u003c\/b\u003e\u003cspan\u003e Internal gullets channel swarf outward away from the dome apex,\u003c\/span\u003e\u003cspan\u003e preventing tooth clogging and metal galling in soft gold and silver.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,5,0\"\u003e\u003cb data-path-to-node=\"5,5,0\" data-index-in-node=\"0\"\u003eHardened Swiss-Quality Tool Steel:\u003c\/b\u003e\u003cspan\u003e Provides wear resistance,\u003c\/span\u003e\u003cspan\u003e edge sharpness,\u003c\/span\u003e\u003cspan\u003e and extended service life across continuous daily bench setting routines.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,6,0\"\u003e\u003cb data-path-to-node=\"5,6,0\" data-index-in-node=\"0\"\u003eUniversal 2.35 mm (3\/32\") Shank:\u003c\/b\u003e\u003cspan\u003e Drops into standard jewelry flex shaft handpieces and micromotor quick-change chucks without requiring collet swaps.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"13\" class=\"\"\u003eSize Selection Guide\u003c\/h3\u003e\n\u003ctable data-path-to-node=\"14\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiameter (mm)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eItem Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,1,0,0\"\u003e0.80 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,1,1,0\"\u003e03 230 008\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,2,0,0\"\u003e0.90 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,2,1,0\"\u003e03 230 009\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,3,0,0\"\u003e1.00 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,3,1,0\"\u003e03 230 010\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,4,0,0\"\u003e1.10 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,4,1,0\"\u003e03 230 011\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,5,0,0\"\u003e1.20 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,5,1,0\"\u003e03 230 012\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,6,0,0\"\u003e1.30 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,6,1,0\"\u003e03 230 013\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,7,0,0\"\u003e1.40 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,7,1,0\"\u003e03 230 014\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,8,0,0\"\u003e1.50 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,8,1,0\"\u003e03 230 015\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,9,0,0\"\u003e1.60 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,9,1,0\"\u003e03 230 016\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,10,0,0\"\u003e1.70 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,10,1,0\"\u003e03 230 017\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,11,0,0\"\u003e1.80 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,11,1,0\"\u003e03 230 018\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,12,0,0\"\u003e1.90 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,12,1,0\"\u003e03 230 019\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,13,0,0\"\u003e2.00 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,13,1,0\"\u003e03 230 020\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,14,0,0\"\u003e2.10 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,14,1,0\"\u003e03 230 021\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,15,0,0\"\u003e2.20 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,15,1,0\"\u003e03 230 022\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,16,0,0\"\u003e2.30 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,16,1,0\"\u003e03 230 023\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,17,0,0\"\u003e2.50 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,17,1,0\"\u003e03 230 025\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,18,0,0\"\u003e2.70 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,18,1,0\"\u003e03 230 027\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,19,0,0\"\u003e2.90 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,19,1,0\"\u003e03 230 029\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,20,0,0\"\u003e3.00 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,20,1,0\"\u003e03 230 030\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,21,0,0\"\u003e3.50 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,21,1,0\"\u003e03 230 035\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,22,0,0\"\u003e4.00 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,22,1,0\"\u003e03 230 040\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,23,0,0\"\u003e4.50 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,23,1,0\"\u003e03 230 045\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,24,0,0\"\u003e5.00 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,24,1,0\"\u003e03 230 050\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,25,0,0\"\u003e5.50 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,25,1,0\"\u003e03 230 055\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,26,0,0\"\u003e6.00 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan data-path-to-node=\"14,26,1,0\"\u003e03 230 060\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"NIQUA","offers":[{"title":"0.80","offer_id":67990681321572,"sku":"03-230-008","price":20.85,"currency_code":"USD","in_stock":true},{"title":"0.90","offer_id":67990681354340,"sku":"03-230-009","price":20.85,"currency_code":"USD","in_stock":true},{"title":"1.00","offer_id":67990681387108,"sku":"03-230-010","price":20.85,"currency_code":"USD","in_stock":true},{"title":"1.10","offer_id":67990681419876,"sku":"03-230-011","price":20.85,"currency_code":"USD","in_stock":true},{"title":"1.20","offer_id":67990681452644,"sku":"03-230-012","price":20.85,"currency_code":"USD","in_stock":true},{"title":"1.30","offer_id":67990747316324,"sku":"03-230-013","price":20.85,"currency_code":"USD","in_stock":true},{"title":"1.40","offer_id":67990747349092,"sku":"03-230-014","price":20.85,"currency_code":"USD","in_stock":true},{"title":"1.50","offer_id":67990747381860,"sku":"03-230-015","price":20.85,"currency_code":"USD","in_stock":true},{"title":"1.60","offer_id":67990747414628,"sku":"03-230-016","price":20.85,"currency_code":"USD","in_stock":true},{"title":"1.70","offer_id":67990747447396,"sku":"03-230-017","price":20.85,"currency_code":"USD","in_stock":true},{"title":"1.80","offer_id":67990747480164,"sku":"03-230-018","price":20.85,"currency_code":"USD","in_stock":true},{"title":"1.90","offer_id":67990747512932,"sku":"03-230-019","price":20.85,"currency_code":"USD","in_stock":true},{"title":"2.00","offer_id":67990747545700,"sku":"03-230-020","price":20.85,"currency_code":"USD","in_stock":true},{"title":"2.10","offer_id":67990747578468,"sku":"03-230-021","price":20.85,"currency_code":"USD","in_stock":true},{"title":"2.20","offer_id":67990747611236,"sku":"03-230-022","price":20.85,"currency_code":"USD","in_stock":true},{"title":"2.30","offer_id":67990747644004,"sku":"03-230-023","price":20.85,"currency_code":"USD","in_stock":true},{"title":"2.50","offer_id":67990747676772,"sku":"03-230-025","price":26.83,"currency_code":"USD","in_stock":true},{"title":"2.70","offer_id":67990747709540,"sku":"03-230-027","price":26.83,"currency_code":"USD","in_stock":true},{"title":"2.90","offer_id":67990747742308,"sku":"03-230-029","price":26.83,"currency_code":"USD","in_stock":true},{"title":"3.00","offer_id":67990747775076,"sku":"03-230-030","price":26.83,"currency_code":"USD","in_stock":true},{"title":"3.50","offer_id":67990747807844,"sku":"03-230-035","price":26.83,"currency_code":"USD","in_stock":true},{"title":"4.00","offer_id":67990747840612,"sku":"03-230-040","price":34.96,"currency_code":"USD","in_stock":true},{"title":"4.50","offer_id":67990747873380,"sku":"03-230-045","price":34.96,"currency_code":"USD","in_stock":true},{"title":"5.00","offer_id":67990747906148,"sku":"03-230-050","price":34.96,"currency_code":"USD","in_stock":true},{"title":"5.50","offer_id":67990747938916,"sku":"03-230-055","price":40.48,"currency_code":"USD","in_stock":true},{"title":"6.00","offer_id":67990747971684,"sku":"03-230-060","price":40.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/2902\/9732\/files\/Size_Selection_Recommended_Speed_RPM_GuideDiameter_mm_Item_NumberRecommended_Max_Speed_RPM_Packaging_UnitPrimary_Application_Scope0.80_mm03_230_00830_000_RPM6_Pcs_BoxMicro-pave_claw_rounding_ultra-fine_wire_ends0.9.jpg?v=1793850668","url":"https:\/\/luxgoldtools.com\/products\/niqua-sf-tool-steel-burs-cup-bur","provider":"LUXGOLDTOOLS","version":"1.0","type":"link"}