Twist drill bits HSS-CO-COBALT for metal, DIN 338, sharpening angle 135º. Powerful, spiral twist drill bits made from high quality HSS steel doped by cobalt. Cobalt layers ensure high thermal stability. Ideally applied for wok with hard materials and drilling of deep holes.

Applied for drilling: alloy tool steel, alloy-free steel (hardness up to 1200N/mm), high-chromium steel such as: V2A and V4A, stainless steel, titanium and titanium alloys, cast iron, aluminum and aluminum alloys, copper (up to 900 N/mm ), grey malleable cast iron, nickel silver, graphite, aluminum alloys, brass and bronze.

Twist drill bits HSS-RB-TITANIUM for metal, DIN338, sharpening angle 135°. Supplied in the metal-plastic shock-resistant case. Drill bits are covered by titanium nitride (TiN) and because of that the surface hardness increases approximately on 2300 HV and thermal stability increases up to 600ºC those aspects assures long service life and improved drilling characteristics.

Applied for drilling: alloyed tool steel, carbon-oxide cast steel (hardness up to 900N/mm), grey malleable cast iron, cast iron with spherical graphite allocations and casted under pressure still, nickel silver, graphite, aluminum alloys, brass and bronze.

Twist drill bits HSS-CO-COBALT for metal, DIN 338, sharpening angle 135º. Powerful, spiral twist drill bits made from high quality HSS steel doped by cobalt. Cobalt layers ensure high thermal stability. Ideally applied for work with hard materials and drilling of deep holes.

Applied for drilling: alloy tool steel, alloy-free steel (hardness up to 1200N/mm), high-chromium steel such as: V2A and V4A, stainless steel, titanium and titanium alloys, cast iron, aluminum and aluminum alloys, copper (up to 900 N/mm ), grey malleable cast iron, nickel silver, graphite, aluminum alloys, brass and bronze.