Manufactured from a high quality M35 grade steel. Ideal for drilling holes into stainless steel and other alloy materials. The 135 split point prevents the bit from drifting and enables faster penetration. Fully ground from solid material M35 alloyed High Speed Steel (HSS) with 5% Cobalt content High heat resistance for particularly tough metal drilling Manufactured to DIN 338 Dimensionally precise High performance 135 split point tip eradicates the need to pre-drill/centre punch." Drill Dia. mm: 4.0 Total Length mm: 75 Working Length mm: 43 Shank Dia. mm: 4.0 Shank Type: Straight Material: M35 Alloyed HSS Steel with 5% Cobalt