Carpenter Drill Bit: The carpenter drill bit for drilling wood there has larger amount of stock removal. Generally, it is made of ordinary carbon steel, the manufacturing process of the carpenter drill is simple, such as forging, stamping, grinding, etc.

Metal Drill Bit: Generally, the metal drill bit is made of alloy of hardness or HHS(high-speed steel), etc. The metal drill bit is cast and molded, after that to be grinded by grinding wheel on the grinding machine. Its manufacturing process is more complicated than carpenter drill bit.