Carbide tipped good performance in chip removal and friction resistance weldon shank/one 19.05mm 3/4" D.O.C 30,50,75,100mm Carbide tippedD.O.C 30,50,75,100mmweldon shank/one-touch shank 19.05mm 3/4",1 1/4"good performance in chip removal and friction resistance Handle for fast interface. Apply to Nitto, Alfra, BDS, Ruko, drilling rig and other magnetic drill machine.Also applies to all types of ...