Drill bit set W HSS 19 pieces

A set of 19 drill bits for structural steel, cast steel, grey cast iron, chilled iron and malleable cast-iron, sintered iron, nickel silver and graphite.

Made of the finest high-speed steel.

Long working life even when used with hand drills.

Local hardening (starting from a diameter of 3.5 mm) provides excellent strength and toughness in the cutting part while keeping the shank ductile.

The shank will not slip or sustain damage in the chuck, reducing drill breakage rate.

Dimensional inspections take place between individual drill manufacturing operations.

Product quality is monitored on a continual basis to ensure excellent results.

Thanks to laser marking, drill clamping problems are eliminated.

Drill run-out and shank slippage in the chuck are eliminated.

Controlled lip relief angle for optimal guidance in the hole and for prevention of gouging.

The resulting holes are perfectly round and smooth.

Split-point geometry of the ground tip guarantees zero resistance of the chisel edge and proper guidance without the use of a centre punch.

Shorter drilling times and elimination of centre punch marking.

The closed flute design with a 35° helix angle for reliable chip removal was specially designed for drill bit application.

Thanks to constant cutting resistance forces, process times are not affected, friction does not increase and premature wear is eliminated.

Point angle 118°.

Optimal engagement with minimum resistance force.

More robust drill body.

Improved resistance to vibration and bending when drilling deep holes, better breakage resistance.