Description This bi-metal holesaw has a diameter of 108 mm and is designed for high-precision cutting of holes in various materials up to 38 mm thick. It is suitable for use with portable electric or pneumatic tools, as well as in drilling, boring, milling, and other machine tools. The saw features variable pitch (4-6 teeth per inch) blades with high-speed steel cutting edges for enhanced hardness, welded seams for accuracy, and heat-treated bodies for maximum durability. Specifications Diameter: 108 mm Material: Bi-metal with high-speed steel cutting edges Blade pitch: Variable (4-6 TPI) Suitable for materials up to 38 mm thick Compatibility and Accessories Compatible with portable electric and pneumatic drills Arbors to suit different sizes are available separately, including models for shank sizes 3/8 inch, 7/16 inch, 1/2 inch, and 5/8 inch Installation Attach the appropriate arbor to the holesaw based on your drill's shank size Secure the holesaw firmly in the drill before use