10pcs multi-function glass drill Carbon steel glass drill bit precision drilling, smooth edge like polishing

10pcs multi-function glass drill, specifications are 2pcs1/8"x3"; 2pcs1/4"x4"; 2pcs 1/4"x6"; 1pc 5/16"x6"; 2pcs3/8"x6"; 1pc1/2"x6; handle is three-square handle, base is 45 carbon steel, and the blade material is YG6X.