C`sink and Deburring Tools Flat countersink Flat countersink Cat. no. PN/mm2 MN/mm2 KHB SN/mm2 NN/mm2 HSS Factorystandard 180° Cat. no. PN/mm2 MN/mm2 KHB SN/mm2 NN/mm2 HSS Factorystandard180° Copper, Copper, 112300 < 850 < 750 < 250 Titanium brass,Alu