Lasts up to 2x longer than a standard HSS M3 hole saw. For electricians and plumbers, 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 is particularly suitable for steel panelling and drywall. With the Power Change plus adapter, hole saws and pilot drills can be changed more quickly and drill cores removed more easily. For use with the Power Change Plus quick-change adapter from Bosch: for precision and robustness.