Twist drill bit made of alloyed high speed steel to DIN 338, cobalt content 5%. Right-hand cutting twist drill bit, Type N, 135Â° drill bit tip, split point manufactured to DIN 1412 C, diameter tolerance h 8. Twist drill bit ground from solid metal with excellent surface quality manufactured to special factory standards. Shank equal to drill bit diameter, drill bit colour: bronze. Two-cutter, cylindrical, two flutes Note: Use the universal cutting oil 2 607 001 409 when working with HSS-Co metal drill bits.