Up to 2x longer service life than a standard HSS M3 hole saw thanks to 8 % cobalt. For electricians and plumbers working in interior fittings, hole saws are invaluable for installing pipes, switch boxes and recessed lights. Ideally, you should only have one type of hole saw for all the challenges and materials that interior work entails. The solution: the PRO Multi Material. The PRO Multi Material hole saw has an improved tooth shape for fast and smooth cuts. Its HSS alloy with a high cobalt content ensures durability. It enables effective hole sawing in steel panelling and drywall. With Power Change Plus, you can change hole saws and pilot drills more quickly and remove drill cores more easily. For use with threaded hole saws with a cutting depth of 44 mm.