Irwin Joran Professional Straight Shank Drill Bit For Granite - 8.5mm
Designed for percussion drilling in very hard materials such as granite Extremely hard and wear resistant carbide tip Straight shank rotary percussion Size: 8.5mm Working length: 75mm | Total length: 125mm This professional quality 8.5mm drilling bit is ideal for granite and to be used stationary machinary. This quality bit from Irwin has been designed for percussion drilling in very hard materials such as granite. It has an extra thick and robust carbide tip allowing it to drill 40% more holes than any other drill bit, while also avoiding corrosion from occuring. The diameter is 8.5mm, it has a working length of 75mm and a total length of 125mm.