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 4.0 x 80mmAdditional Information:• Diameter (mm): 4• Working Length (mm): 45• Overall Length (mm): 80• Pack Qty.: 1