This 20mm diameter, 160mm length irwin masonry drill bit is designed for heavy duty large diameter drilling in brickwork, concrete and breeze block, perfect for substantial fixings and demanding applications. Engineered for fast and efficient drilling with cordless drills, this bit drills up to 60% faster than competitive drill bits whilst maintaining exceptional durability for this large diameter. The single flute design ensures faster dust removal for increased drilling speed, whilst the unique pressed diamond-ground carbide tip allows for aggressive cutting action. The carbide tip design ensures 20% longer life compared to previous irwin masonry drill bits. The chrome vanadium body with high carbon content allows more hardening, creating a stronger bit with maximum rupture strength for demanding trade applications. Features and benefits: 20mm diameter for heavy duty large diameter applications 160mm length provides good depth for extended reach drilling up to 60% faster drilling performance than competitive drill bits single flute design for faster dust removal and increased drilling speed pressed diamond-ground carbide tip for aggressive cutting 20% longer life compared to previous irwin masonry bits high carbon chrome vanadium body for maximum strength specifications: diameter mm : 20 working length mm : 160 overall length mm : 80 pack qty.: 1 Total length: 160mm.