IRWIN - Granite Drill Bit Set 7 Piece 4-12mm

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 IRW10501918 Granite 7 piece drill bit set contains the following pieces: 4.0 5.0 6.0 7.0 8.0 10.0 and 12.0mm