General description This bi-metal hole saw from Irwin is designed for efficient drilling in materials such as aluminum, copper, iron, stainless steel, wood, and zinc. Its durable construction ensures fast, precise cuts and long-lasting performance, making it suitable for both DIY enthusiasts and professionals. Technical specifications Diameter: 114 mm Material: Bi-metal (high-speed steel with alloy teeth) Weight: 0.2 kg Teeth last up to 100% longer than standard saws Variable tooth design (4-6 pitch) for faster cutting action Compatibility and accessories Compatible with standard drill chucks Suitable for drilling in aluminum, copper, stainless steel, and other metals Installation Insert the hole saw into a compatible drill chuck Ensure the drill is set to the appropriate speed for metal cutting Usage Mark the drilling point clearly Secure the material to prevent movement Start drilling at a low speed, then increase as needed Apply steady pressure for clean cuts