Drill Bit HSS Polished Born of 5% Cobalt. Angle tip to 135 °. Sharpening in cross. Propeller Type N. tolerance of diameter H8. Accuracy to boot. The cobalt content in increases the hardness of the drill and the resistance to high temperatures. Suitable for perçer the aciers non-alliés and allies (up to 1200 N/mm²), the stainless steel, the foundry. The choice of base for industrial applications and drilling difficult materials. DIN 338. Shank cilíndrico. Art 731 Typerence: di-731d05.5Drill Bit metal: Drill HSS Cobalt 5% D. 5.5 x Read. 57 mmType: