Rennie Tool Company Rennie Tools - Box of 10 x 8.5mm HSS Gold Cobalt Jobber Drill Bit Set For Stainless Steel, Hard Metals, Aluminium, Cast Iron, Copper. Twist Drill Bit Sets Supplied In A Box. 8.5mm Drill Bit Set

For drilling particularly tough or hard metal drilling applications such as stainless steel, hardened metal, cast iron, Cr-Ni and special acid resistant steels. Also work very well on standard metals / steels, RSG, aluminium, high temperature alloy, titanium alloy, non ferrous metals, plastics and wood.

All our cobalt drill bits are manufactured from high grade M35 alloyed HSS steel with 5% Cobalt content and are fully ground from solid material.

This cobalt drill bit set is manufactured to DIN338 specifications and they are dimensionally precise. These HSSCO HSS drill bits can be used in pillar drills, handheld electric drills, battery powered drills etc and can also be used in CNC machines

135° split point from 3mm and above eradicates the need to pre-drill or centre punch. Prevents walking and enables faster penetration.

Our high-quality M35 HSS drill bits for metal offer exceptional hardness, heat resistance, and durability. Our 2 flute design is optimised for fast chip removal and smooth cutting. This pack of 10 cobalt jobber drills are supplied in a plastic storage case. These are ideal for professionals, DIY enthusiasts and home improvement enthusiasts