The irwin blue groove 6x extra long wood drill bit in 22mm diameter is designed for drilling substantial holes for larger waste pipes, ducting and multiple cable installations through structural timbers. This 400mm 16 inch extra long bit provides the exceptional reach required for drilling through walls, ceilings and floors, making it indispensable for plumbers, electricians and builders tackling demanding installation work. Offering 6 times faster drilling penetration than standard flat bits, the 22mm variant delivers remarkable productivity whilst maintaining excellent hole quality. The innovative tri-flute design ensures efficient chip ejection, preventing clogging and maintaining consistent cutting performance throughout the drilling operation. The full screw tip provides accurate positioning and excellent pull through, whilst the precision cutting spurs create clean, professional holes with minimal break out. Heat treated for exceptional durability, this drill bit features a tapered flute that reduces binding, ensuring smooth, controlled drilling even through dense hardwoods or when working at awkward angles in confined spaces. Features and benefits: 22mm diameter for larger diameter pipe and ducting work 400mm extra long length for drilling through thick structural members 6 times faster penetration than conventional bits tri-flute design for rapid chip removal heat treated for long-lasting performance specifications: diameter mm : 22 overall length mm : 400 working...