Kwong Yuen Copper Alloy Screwdriver Bits (Compatible with Bergeon, Horotec and Kwong Yuen)

Made from Copper-Beryllium alloy. Softer than steel to not mark or damage precious metal screws or fragile screws found on for example Audemars Piguet and Patek movements.

Fits Bergeon, Horotec and Kwong Yuen screwdrivers.