40821 | Draper Tools Masonry Drill Bit 22 x 400mm The single flute design ensures faster dust removal for increased drilling speed, with the unique, pressed diamond-ground carbide tip allows for aggressive cutting and the carbide tip design also ensures 20% longer life compared to previous Irwin masonry drill bits. The Irwin IRW10501864 masonry drill bit for cordless drills has the following dimensions: Drillbit diameter: 14., 0mm Total length: 400mm Working Length: 300mm IRWIN Industrial Tools Ltd. They drill up to 60% faster than competitive drill bits whilst maintaining the same high durability. Irwin Cordless Drill Bit Irwin Masonry Drill Bit Drillbit Mason Concrete 3mm 4mm 5mm 6mm 8mm Cordless Drill Masonry Bit The Irwin masonry drills bits are designed for fast and efficient drilling in brickwork, concrete and breeze block, especially with cordless drills. They drill up to 60% faster than competitive drill bits whilst maintaining the same high durability Fast and efficient drilling , Single flute design The Irwin masonry drills bits are designed for fast and efficient drilling in brickwork, concrete and breeze block, especially with cordless drills. 1.0mm x 34mm Irwin HSS Metal Drill Bit (Pack of 3 IRWIN, 133 years of ingenuity and high quality