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.
The Irwin IRW10501912 Granite drill bit has the following dimensions:
Our delivery service is to kerbside only. Due to insurance guidelines, our drivers are unable to enter private residences. The recipient of the goods is responsible for any additional lifting once the initial delivery has been made, and for heavy and bulky items we would require additional support from the customer with the delivery.