Gson HSS-G 70-piece cobalt drill bit set, 1–10.2 mm

A special cutting design allows drilling without a centre mark. The high-alloy steel (5% cobalt) ensures a service life 5–10 times longer than that of a standard HSS drill bit. The drill bit features a vacuum-oxidised cobalt coating, which reduces friction. Suitable for drilling in steel, stainless steel, alloy steel and all types of cast iron.

Contains:

• 5 pieces with diameters of 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5 and 6 mm

• 3 pieces with diameters of 3.3, 4.2, 7 and 8 mm

• 2 pieces with diameters of 6.8, 8.5 and 10 mm

• 1 piece with a diameter of 9 or 10.2 mm