3
The Irwin Granite drill bit range has been designed for impact / percussion drilling in very hard materials such as granite, concrete and natural stone. They can drill 40% more holes than conventional masonry drill bits due to an extra hard, thicker and more robust carbide tip. The rounded cutting edges mean higher durability resulting in 50% more accurately sized holes per drill bit.Size 3.5 x 75mmAdditional Information:• Diameter (mm): 3.5• Working Length (mm): 40• Overall Length (mm): 75• Pack Qty.: 1