The Irwin Granite drill bit range has been designed for impact / percussion drilling in very hard materials such as granite, concrete and natural stone.\nThey 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.\nThe Irwin IRW10501908 Granite drill bit has the following dimensions:\nDrillbit diameter: 8.0mm\nTotal length: 200mm\nWorking Length: 130mm\n\n--\nOur eBay Store\n\nPlease note: This item has a longer lead time for dispatch then normal as it's a non-stocked item that is ordered in, please see the estimated delivery date by eBay. We will of course ship the item sooner if possible.\n\nIRWIN\u00AE 10501908 Granite Drill Bit 8.0 x 200mm\n\nProduct Details\n\nThe Irwin Granite drill bit range has been designed for impact / percussion drilling in very hard materials such as granite, concrete and natural sto;