Description
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
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