1)Spotting drill bits,cutting tools 2)Size:3mm-20mm 3)Material: ... 4)Coated:TIN,Bright.. 5)Point angle:90/120 degree Spotting drill bits,drill bits,drilling tools,cutting tools Feature 1 ... Hard Steels,Ductile Cast Iron,Mold Steels,Aluminum.6.Mainly used for the hole processing prefabricated accurate location, guide the twist ...