Polishing Pin Mandrel

The Precision Micro Collet Polishing Pin Mandrel is a specialized, workshop-grade rotary accessory engineered to secure ultra-fine abrasive rubber cylinders.

Machined from high-strength industrial tool steel, this pin mandrel features an integrated miniature knurled chuck system that acts like a micro-vise. Instead of using a standard fixed screw head, this tool uses a split-jaw collet head that compresses uniformly around delicate polishing rods. This allows individual bench jewelers to lock fine pins tightly into place with zero runtime slippage, ensuring perfectly centered tracking for detailing intricate metal areas under active magnification.

Key Product Features

• Miniature Knurled Adjustable Chuck: Built with an adjustable micro-jaw setup as shown in that tightens effortlessly by hand to clamp raw polishing pins securely.

• Precision Center Jaw Closure: Features a perfectly concentric split opening, visible in, which ensures true-center tracking and completely eliminates wobble inside your handpiece.

• Standard 2.35mm Drive Shank Fitment: Calibrated precisely to slide smoothly into standard jewelry micromotor handpieces, flexible shafts, and pendant drills.

• Rigid Monolithic Steel Construction: Forged from hardened industrial steel to resist high rotational strain, keeping your micro-pins completely steady during high-velocity bench work.