The diameter of a common drill bit is 32mm 34mm 36mm 38mm 40mm 42mm.The Drill Bits are made from grade hard alloy and special steel, generally matched with the light-duty rock drill.They are widely used in the mining projects.
Connection method Taper Thread
Type of Skirt Body 50/55/65mm
Color Yellow, black ,red,green and so on.
Productive process Forging and heat treatment