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 only have one type of hole saw for all the challenges and materials that interior finishing entails. The solution: the PRO Multi Material. The PRO Multi Material hole saw features an improved tooth geometry for fast and smooth cuts. Its high-cobalt HSS alloy ensures durability. It is particularly suitable for steel cladding and drywall. With the Power Change Plus adapter, hole saws and pilot drills can be changed faster, and core bits can be removed more easily. For use with the Bosch Power Change Plus quick-release adapter: for accuracy and robustness. Adapter is not included.