Solid Carbide Drills DDC Solid Carbide Drills - 20×D (for Deep Hole) 內冷深孔鎢鋼鑽頭 Product Specs P M K N S H . 20×D Cutting depth . Reinforced Shank . 135° Tip Angle . Internal Coolant ● ● ● ○ ○ ○ . UNIX Coating . Tolerance h8 . Double Margins Design . SX Design . For Steel, Alloy Steel, Stainless Steel and Cast Iron. ※ DDC drills require an initial pilot hole to guide the drill. Unit:mm Order No. D L1 L Ds Order No. D L1 L Ds DDC03002001 3.00 70 110 3 DDC03502001 3.50 83 123 4 DDC04002001 4.00 96 136 4 DDC04502001 4.50 118 158 6 DDC05002001 5.00 118 158 6 DDC05502001 5.50 140 180 6 DDC06002001 6.00 140 180 6 DDC06502001 6.50 162 202 8 DDC07002001 7.00 162 202 8 DDC07502001 7.50 183 223 8 DDC08002001 8.00 183 223 8 DDC08502001 8.50 205 249 10 DDC09002001 9.00 205 249 10 DDC09502001 9.50 227 271 10 DDC10002001 10.00 227 271 10 C018