The IRWIN bi-metal holesaws are designed for professionals, offering long-lasting performance for general construction, electrical installation, plumbing, heating, ventilation, and remodelling. The sharp, variable tooth (4-6 pitch) design ensures faster cutting action and enhanced performance across various materials. Its bi-metal construction and electron beam welded teeth provide a stronger, more durable blade. The IRWIN holesaw range is available in sizes from 14 mm (9/16in) to 152 mm (6in), with high-quality arbors and pilot drills available for all application needs. It can cut through a variety of materials including: aluminium, copper, iron, stainless steel, wood, and zinc.