General description The Faithfull 9 Piece Plumbers Professional Holesaw Set includes the six most frequently used plumbers holesaw sizes, along with two arbors and an adaptor. This set is designed for plumbing and general hole-cutting tasks, ensuring efficient work with commonly used sizes. Technical specifications Material: Bi-metal high-speed steel Pitch: Variable Sizes included: 19mm, 22mm, 29mm, 38mm, 44mm, 57mm Arbors: 3/8in hex for 14-30mm holes, 7/16in hex for 32-152mm holes Compatibility and accessories Compatible with most variable speed power drills Includes arbors and adaptor for different hole sizes Installation Attach the appropriate arbor to the holesaw Insert the assembly into your drill and tighten securely Usage Mark the desired hole position on the material Secure the material to prevent movement Set the drill to a suitable speed Start drilling with steady pressure, allowing the saw to cut smoothly Other information