Foredom® H.20D Handpiece, Duplex Quick Change

Technical Specifications

Model Designation	H.20D Duplex Quick Change Handpiece
Drive Flex Mechanism	Integrated High-Flexibility Duplex Spring
Accessory Swapping Type	Tool-Free Quick Release Mechanical Lever
Collet Diameter Capacity	Fits 3/32" (2.35mm) Shanks Only
Front Grip Profile	Molded Plastic, Tapered Close-Handling Shell
Bearing Infrastructure	Pre-Lubricated Ball Bearings (Maintenance-Free)
Overall Length Profile	10-1/8" Total Length
Body Diameter Metrics	1-1/8" Center Diameter X 3/8" Front Taper
Net Instrument Weight	5.4 ounces

The Foredom® H.20D Handpiece with Duplex Spring is a professional-grade, high-performance rotary tool component engineered specifically for intricate jewelry engraving, fine detailing, and continuous production work at the bench pin. Building on the core design architecture of the classic No. 20 model, this specialized variant integrates a flexible duplex spring linkage to deliver enhanced manipulation and fluid structural agility.

Featuring a dedicated lever-action quick-release mechanism alongside a molded, ultra-low-profile front section, it permits exceptionally close handling while eliminating tedious tool-key adjustments. By isolating the rotating mass via factory-sealed internal cells, it maintains smooth operation under high loads, providing a dependable setup for master stone setters and artisan engravers.

Key Product Features

• High-Flexibility Duplex Spring: Built with a premium, heavy-duty duplex spring linkage that extends structural versatility, dampens sharp wrist angles, and keeps cuts exceptionally smooth.

• Quick-Release Lever Architecture: Provides rapid, tool-free bur changes by simply flipping the integrated lever open to change accessories and moving the lever back to secure the bit firmly in place.

• Ergonomic Tapered Plastic Grip: Designed with a specialized molded black composite front grip that measures just 3/8" in diameter at the front taper to facilitate an easy and close pen-like hold.

• Pre-Lubricated Internal Ball Bearings: Engineered with high-precision ball bearings that are completely sealed and pre-lubricated at the factory, eliminating routine oiling maintenance workflows.

• Strict 3/32" Shank Calibration: Outfitted with an integrated precision collet calibrated to accept standard bits and burs with 3/32" (2.35mm) shanks exclusively.