Hordion 1 3/8inch/35mm Carbide Hole Saw Cutter Drill Bit Tooth Tipped TCT Hole Cutter for Stainless Steel Sheet Metal Sheet Plastic FRP Board Features: Perfect & Smooth Cutting Effect: The optimized tooth profile can achieve more precise, smoother, faster and safer drilling, so as to obtain a perfect cutting effect. The Service Life Is Extended By 5 Times: The Hordion carbide hole saw can cut quickly and accurately in various metal applications, and can be applied to stainless steel, aluminum alloy, castings, section steel, iron, copper and other hard alloys. At the same time, the life span is 5 times longer than bimetal and HSS hole saws! Kind Reminder: 1. Please check the integrity of the hole drill before use. 2. When the hole drill is installed in the electric drill, the three sides of the corresponding handle should be clamped. 3. When drilling holes, keep the verticality of the hole drill and the workpiece. 4. Use a small feed force when starting drilling, and use a medium feed force after positioning. 5. During drilling operation, the speed should not be too low to avoid jamming of the knife edge and causing broken knife. 6. When the center drill drills through the workpiece, the force should not be too large to avoid severe impact between the blade and the workpiece. 7. After the hole drill drills through the workpiece, the workpiece should be withdrawn while the hole drill is rotating. Package Include: 1 x 35mm hole saw 2 x high-speed steel pilot drill bit 2 x spring 1 x L hex wrench Customer Service: We take every customer seriously and do our best to provide each customer with a safer, more convenient and more satisfying shopping experience. If you have any questions about the product, we will provide you with a satisfactory solution as soon as possible.