diamond files,hand tool,files sets, halfround ,triangle,barrette,round,square,hand,knife diamond files Packing: 5pcs / set

diamond file:140mm/160mm/180mm

Electrodeposit process is used to electroplate diamond on base, which is applied to hard materials such as hard steel, ceramics and glass.  The standard shapes are flat, round, semicircle, square, triangle, sharp-flat, knife-shaped, single-sided triangle and oval.