Special drills consisting of cobalt alloyed heavy duty HSS with higher heat resistance. Ideally suitable for drilling of materials that are difficult to drill. Application: for stainless steel and alloyed cast steel over 900 N/mm strength.Lubrication essential.

Applications: steel, cast steel alloyed and unalloyed (up to 900 N/mm Strength), grey, malleable, ductile and pressure castings, sintered iron, nickel silver, graphite, short chipping aluminium alloys, brass and bronze.

Comes complete in a metal carry case with holder for each drill bit.

Specification: