The bi-metal hole saw material is a heat-treated M42 bi-metal saw band with sharp teeth, durable and good stability. Processing materials range from thin metal to wood, plastic, PVC, etc. A hole saw requires only 1 pass to cut dowels; these hole saws are ideal for jobs where high performance and precision are required. Excellent for cutting wood, plastic, machinable metal, nail-embedded wood, plywood, pipes, and steel. High-speed steel hole saws offer shock-resistant teeth and resist tooth scratches. Soft spring steel creates a flexible backing material that allows the hole saw to absorb the impacts of drilling work in difficult-to-cut materials. Cuts faster, smoother, without as much vibration as others thanks to its variable pitch teeth; creates holes for pipe and tube installation, door lock installations, electrical conduit, piping, and antennas. The teeth are electron welded for an unbreakable and shock absorbing alloy body. Packaged in individual boxes. Note: Arbor is included Size: Length 65mm Color: Green Quantity: 1 pc