Durston Ring Stretcher/ReducerRing Stretcher Reducer from Durston Tools. Durston Tools design expertise brings you a high precision ring stretcher reducer to ensure exceptionally accurate ring sizing. The heavy duty cast iron construction gives you real durability and strength. Features include a six spline mandrel with 16 polished countersunk dies enabling you to reduce bands up to 12mm, while specially designed gear reduction ensures effortless forming. Ring Stretcher Reducer

Use on gold

9 diameter x 10mm - 22mm in length

This motor plugs directly into the rear of the PUK 6 and is controlled via a thumb switch on the body of the motor

Size M & Size N

Features Summary

Size U Approx Weight 5

• Display with plain text messages

The cover has ventilation slots

Melts at lower temperature (125° F)

1g / Size O - P: Approx 4

7g / Size L: Approx 3

LED display for Temperature and Time