KEY FEATURES HIGH-PERFORMANCE CARBIDE TIPS – Engineered with durable carbide tips, these hole cutters are built to handle tough materials like steel, aluminum, brass, and more, providing long-lasting sharpness for clean, precise cuts. CENTER POSITIONING DRILL – Includes a built-in center positioning drill to ensure accurate hole alignment and stable cutting, minimizing the risk of wandering during operation. 10MM SHANK SIZE – The 10mm shank ensures compatibility with most hand drills, bench drills, and magnetic drills, offering a secure, stable connection for smooth, efficient operation. DURABLE & LONG-LASTING – The carbide-tipped construction resists wear and heat, ensuring that the cutters remain sharp and effective even during heavy-duty use over extended periods. MULTI-FUNCTION METAL CUTTING – Ideal for a wide range of metalworking applications, including automotive, plumbing, electrical work, and general construction projects. Perfect for both professionals and DIY enthusiasts. SPEC Type: 6 PCS/Set, 10 PCS/Set Material: Alloy, Carbide Color: Gray Size: As Shown in the Picture Package Includes: 6/10 * Carbide-Tipped Hole Cutters NOTES The center positioning drill needs to be manually installed and tightened. For continuous cutting, please select a lower speed. Water or coolant should be used to lower the temperature, otherwise, there is a risk of damaging the drill bit. Please allow a small error due to manual measurement. Please make sure you do not mind before purchasing.