Precision engineered steel drill bits, with 5% cobalt shaft, for use on tough materials and hard steel, including stainless steel. Manufactured to DIN338 standards, with a 135 degree split point tip for drilling without pre-centring. The M35 Shaft with 5% Cobalt gives excellent resistance to heat and wear. Right hand cutting at 30 degrees. Suitable for drilling sheet metals, non-ferrous metal, steel, stainless steel, brass, cast iron. This set contains 1 to 13mm bits in 0.5mm increments.