Champion 330Pc Brass Olive Assortment 940633 C The drill is then ground Bits 12 mm drive The drill is then ground a second time to achieve a bright finish on the shank and cutting edges Diameter: 1 2in UNC Part # Size Pack Qty C1412 1 101 Suits 1 8 Copper 20C1412 2 102 Suits 3 16 Copper 30C1412 3 103 Suits 1 4 Copper 60C1412 4 104 Suits 5 16 Copper 60C1412 5 105 Suits 3 8 Copper 40C1412 6 107 Suits 1 2 Copper 20C1412 7 102N Suits 3 16 Nylon 10C1412 8 103N Suits 1 4 Nylon 10C1412 9 104N Suits 5 16 Nylon 10C1412 10 105N Suits 3 8 Nylon 10C1412 11 110 Suits 6mm Copper Tube 30C1412 12 110N Suits 6mm Nylon Tube 30 Replacement Packs Available