1.bit set,driver bit,dill bits 2.materal:s2 3.Surface:sandblasted 4.Model Nomber:SBF-DD1 bit set ,driver bit,dill bits1.Material types:Cr-V 6150,8660,S22.Surface treatment:sandblasted, tin-coating, Cu-coating, Ni-coating, Cr-coating, Zn-coating3.Head types:PH4.length:75mm5.Special heat-treated6.property stabilize and long life timeThe driver bit be listed here are the part we have now, if ...