General description This high-quality Bi-Metal Speed Slot Hole Saw Drill Bit features a durable, impact-resistant construction with a variable tooth design on a flexible special steel body (bimetal). It is designed for efficient cutting of round holes in various materials, offering long-lasting performance and precise results. Technical specifications Diameter: 40 mm Tooth pitch: 4.5 / 5.5 teeth per inch Maximum cutting depth: 40 mm Material: Bimetal (special steel body with hardened teeth) Compatibility and accessories Suitable for use with stationary drills, lathes, or electric hand drills with appropriate speed Compatible with materials such as steel, stainless steel, brass, copper, cast iron, lightweight metals, wood, plasterboard, and plastics Installation Attach the hole saw securely to the drill or compatible power tool Ensure the drill is set to the recommended speed for the material being cut Usage Use on flat or curved surfaces to cut clean, round holes Apply steady pressure