The Bosch PRO BiM Progressor Power Change Holesaw is perfect for working with a wide variety of materials including wood and metals. The Bi-Metal holesaw delivers twice the lifespan of its predecessor and thanks to the addition of Bi-Metal with 8 cobalt alloy, has increased durability. The enhanced progressive tooth strip enables faster cuts in softwood, drywall, metal pipes and profiles, non-ferrous metals as well as plastics. For use with the Bosch Power Change Plus keyless arbor the fastest arbour system for lockingunlocking hole saw and pilot drill in one click thereby offering accuracy and robustness.