We have been committed to finding the pain points often encountered by the majority of repair technicians in the process of repairing watches, and go all out to find the best solution. The traditional willow stick sharpening auxiliary stick is easy to break, easy to fall chips, even bakelite, fiber glue rod, plastic auxiliary stick, easy to wear and fall chips. Until we encounter peek polymer synthetic material, high hardness, good strength, wear resistance. It's hard to contaminate the movement with debris, supplemented by knurled aluminum alloy stick , easy to hold.This is the icing on the cake when we assemble the movement.