Made from a single cylinder of turned metal for ultimate stability, robustness and accuracy. Extreme durability and the ability to cut the hardest grades of steel comes from carbide teeth which are individually sharpened and brazed onto the body. Lasts up to 50x longer than bi-metal holesaws in tough materials. For use with the Bosch Power Change Plus keyless arbor. Cuts Stainless Steel & Steel Steel Slotted Barrel to Aid Removal of Debris 22mm - 32mm Dia. Holesaws For Use with 3-Jaw Chuck Machines on Rotary Action Carbide Technology Cuts Stainless Steel & Steel Steel Slotted Barrel to Aid Removal of Debris 22mm - 32mm Dia. Holesaws For Use with 3-Jaw Chuck Machines on Rotary Action Carbide Technology