The 25mm irwin bi metal high speed hole saw is one of the most popular sizes in the range, ideal for standard electrical socket back boxes and a wide variety of plumbing applications. This diameter accommodates 22mm copper pipe installations and numerous other common fixtures, making it indispensable for professional tradespeople. Featuring robust bi metal construction with electron beam welded teeth, this 25mm holesaw maintains cutting efficiency through demanding daily use. The variable tooth design 4 6 pitch provides faster cutting action and enhanced performance across diverse materials, from softwoods through to stainless steel and zinc. Features and benefits bull 25mm diameter perfect for socket boxes and 22mm pipework bull bi metal construction delivers exceptional durability bull variable tooth pitch ensures smooth, fast cutting bull electron beam welded teeth resist breakage under load bull versatile material compatibility including metals and wood bull professional grade tool built for trade use specifications size mm 25 material bi metal pitch variable diameter 25mm