<b>Specification:</b><br> Product Name: TCT Hole Saw<br> Cutting Diameter: 22mm/0.86”<br> Working Length: 25mm/1”<br> Total Length: 98mm/3.85”<br> Material: Tungsten Carbide<br> <br> <b>Features:</b><br> Carbide hole saw cutter is extremely long lifetime, especially designed to cut alloy and stainless steel materials.<br> Quick, precise, smooth cuts into up to 5mm thick stainless steel, also for high alloy steel, aluminum, plastic, FRP and PVC.<br> The hole saw has a twist drill bit inside, which is detachable. Come with a hex wrench, make your job more convenient and easier.<br> Protect carbide teeth from impacting when the pilot drill bit through the cutting material.<br> Suitable to be installed onto hand held drill, table mounted drill, or other drills. Used for electric drill and provides excellent performance.<b> <br><br><b>Note:</b><br> 1. Check the integrity of the hole drill before use<br> 2. The three surfaces of the corresponding shank shall be clamped when the hole drill is loaded into the electric drill<br> 3. Maintain the perpendicularity between the hole drill and the workpiece when drilling<br> 4. Small feed force is adopted at the beginning of drilling, and medium feed force is adopted after waiting for positioning<br> 5. When drilling, the rotation speed should not be too low to avoid blade sticking and causing knife collapse<br> 6. When the center is drilling through the workpiece, the force should not be too large to avoid violent impact between the blade and the workpiece<br> 7. After drilling through the workpiece, the hole drill should be kept rotating to exit the workpiece<br> 8. When drilling continuously, the cutting edge shall be cooled with cutting fluid<br>