HSS-Co. DIN 1869. Type TS. Point angle 130°. Profile-ground with split point. With straight shank. Right-hand cutting. Extra-long type. Special drill for extreme bore depth, with marked thermal hardness resistance and with large chip space. For boring under difficult conditions, with high thermal demand. For the processing of steels and steel castings of high strength, grey cast iron, malleable cast iron, spheroidal cast iron etc.