Up to 2x longer lifespan than a standard HSS M3 hole saw thanks to 8% cobalt. For electricians and plumbers working in interior construction, hole saws are invaluable for installing pipes, junction boxes, and recessed lights. Ideally, you would have just one type of hole saw for all the challenges and materials that interior construction presents. The solution: the PRO Multi Material. The PRO Multi Material hole saw features an improved tooth design for fast and smooth cuts. Its high-cobalt HSS alloy ensures durability. It allows for effective hole sawing in steel cladding and drywall. With Power Change Plus, you can switch hole saws and pilot drills faster and remove drill cores more easily. Designed for use with threaded hole saws and a cutting depth of 44 mm.