Irwin® 10504178 Bi-Metal High Speed Holesaw 40Mm

The 40mm IRWIN Bi-Metal High Speed Hole Saw is one of the most frequently used larger sizes, perfect for installing standard waste pipes, substantial electrical conduits and various mounting hardware. This diameter is essential for plumbers working with bathroom and kitchen installations, as well as electricians running larger cable runs. Built to professional standards with bi-metal construction and electron beam welded teeth, this 40mm holesaw maintains cutting efficiency through repeated use. The variable tooth design (4-6 pitch) delivers faster cutting action with reduced operator effort, producing clean holes across a wide range of materials from softwoods to stainless steel. Features and Benefits: • 40mm diameter suits standard waste pipes and large conduits • Bi-metal construction ensures long-lasting performance • Variable tooth pitch provides smooth, efficient cutting • Electron beam welded teeth maintain sharpness • Compatible with aluminium, copper, iron, stainless steel, wo