Durston® Round Ring Mandrel 4 – 12.5mm

Product name	Durston® Ring Mandrel
Shape	Round
Size	4-12.5mm
Material	Hardened Steel
Weight	0.15kg

The Durston® Round Tapered Ring Mandrel is a specialized, high-grade mini tool steel stake engineered for wrapping, rounding, and work-hardening small ring bands, precise bezel settings, circular wire components, and custom bail links.

Forged from induction-hardened steel and ground to a smooth, polished finish, this 0.15kg mini mandrel provides an unyielding mechanical foundation to form complex circular designs. The seamless, gradual round taper allows individual creators to manipulate intricate wire designs or fine metal sheet smoothly without risking flat spots, awkward dents, or structural marring on highly polished silver and gold stock.

Key Product Features

• Induction-Hardened Solid Tool Steel: Precision-machined from high-grade hardened steel built to withstand intensive workshop mallet adjustments without dimpling, chipping, or bending.

• Precision-Ground Round Taper: Features a continuous, seamless circular taper expanding gradually from 4mm at the top tip up to 12.5mm at the base boundary, offering excellent curvature resolution for petite geometry.

• Straight Handle with Registration Groove: Built with a smooth, cylindrical handle section featuring an alignment registration groove and stamped with the original factory brand and sizing marks. Designed to be held securely by hand or clamped firmly into standard bench vises.

• Lightweight Tactile Agility: Weighs a nimble 0.15kg, giving you excellent tactile feedback and handheld balance when manipulating fine wire configurations under bench magnifying lamps.