HSS step drill bits for metal with stright cutting edge. Completely sharpened HSS step drill bit made from high quality high speed steel (HSS M2, hardness HRC62-64) possess the increased accuracy of rotation. Maximum drilling depth is 5mm on each step, applied without preliminary drilling in the most thinnest metal sheets, without rough edges and chamfer bit of the edge.

Application: for drilling of non-ferrous metals, thin metal sheets, plastic, profiles, plexyglass without twists and crumbling.

HSS-STEP SFT step drill bits for metal with spiral cutting edge. Completely sharpened HSS step drill bit made from high quality high speed steel (HSS M2, hardness HRC62-64), are covered by titanium nitride, possess the increased accuracy of rotation, does not lead to twists and crumbling. Maximum drilling depth is 5mm on each step, applied without preliminary drilling in the most thinnest metal sheets, without rough edges and chamfer bit of the edge.

Application: for drilling ofnon-ferrous metals, thin metal sheets, plastic, profiles, plexyglass.

Twist drill bits HSS-RB-Standard for metal, DIN 338, sharpening angle 118º. Powerful roll forged drill bits made of the high speed steel and has the increased rotation accuracy.

Applied for drilling: alloy tool steel, carbon-oxide cast steel (hardness up to 900N/mm), grey malleable cast iron, nickel silver, graphite, aluminum alloys, brass and bronze.

Twist drill bits HSS-GT-Titanium for metal, DIN 338, sharpening angle 135º.
Drill bits are covered by titanium nitride and therefore 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 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.

Twist drill bits HSS-EXT for metal rolled forged wit length 220mm, DIN 338, sharpening angle 135º. Powerful drill bits with extended length intended for drilling of deep holes, have long durability resource. Deep drilling requires short feedings and often shavings removal.

Applied for drilling: steel, alloyed and alloy-free steel cast (hardness up to 900 N/mm), grey and malleable cast iron, ductile iron, high-pressure diecasting, powder metallurgical alloy, nickel silver, graphite, aluminum alloys, bronze and brass.