... . Product name: tool parts of screw bit, screwdriver bit, drill bits;2. Length 25,50 mm3.surface treatment: sandblasted;4. Material ... CRV steel for you to choose5.Phillips PH1,PH2,PH3;Slotted: 4mm,5mm,6mm,Pozi:PZ1,PZ2,PZ3;Hex 4mm,5mm ... T10,T15,T20,T25,T27, T30, T40; Ph1,PH2,PH3,Slotted 5/32", 3/16", 1/4",PZ1, PZ2, PZ3;HEX ...