Features High Speed Steel Durability: Crafted from high speed steel, this hole cutter ensures exceptional sturdiness and a long service life for demanding tasks Efficient Three Blades Design: Featuring an innovative inner, middle, and outer blade design, this tool delivers higher efficiency and minimizes collapse risks Reduced Friction Angle: The unique inclination angle design decreases friction and helps maintain optimal cutting temperatures for consistent performance Smooth Chip Evacuation: Designed to evacuate chips effortlessly, this tool significantly lowers the chances of jamming and tool breakage during operation Versatile Metal Compatibility: Perfectly suited for various metal types, including cast iron, steel plate, and thick stainless steel, ensuring a wide range of applications Features: 1、[ High Speed Steel] Made of high speed steel material, sturdy and , long service life. 2、[Three Blades Design] Inner, middle and outer three blades design, higher efficiency, not easy to collapse. 3、[Inclination Angle Design] Inclination angle design reduces friction and reduces the temperature of the knife. 4、[Evacuate Chips Smoothly] Evacuate chips smoothly, greatly reducing jamming and tool breakage, and stable performance. 5、[Applicability] Suitable for metal openings such as cast iron, steel plate, thick stainl steel, thick non standard iron, etc. Specification: Item Type: Hole Saw Material: High Speed Steel Handle Diameter: Approx. 10mm / 0.4in Total Length: Approx. 90mm / 3.5in Working Depth: Approx. 25mm / 1.0in Uses: Metal Openings for Cast Iron, Steel Plate, Thick Stainl Steel, Thick Non Standard Iron, Etc. Package List: 1 x Hole Saw 1 x Hex Key 1 x Storage Box Note: betweendiv>1 Check the integrity of the hole drill before use;between/div>betweendiv>When the 2 hole drill is installed in the electric drill, the three faces of the corresponding shank should be clamped;between/div>betweendiv>Keep the verticality of the hole drill and the workpiece when drilling with a 3 hole drillbetween/div>betweendiv>4 Use a small feed force when starting drilling, and use a medium feed force after positioning;between/div>betweendiv>5 When drilling, the speed should not be too low to avoid jamming of the knife edge and causing tool collapse;between/div>betweendiv>6 When the center drill drills through the workpiece, the force should not be too large to avoid violent collision between the blade and the workpiecebetween/div>betweendiv>After the 7 hole drill drills through the workpiece, the workpiece should be withdrawn while the hole drill is rotatingbetween/div>betweendiv>8 When drilling continuously, use cutti Package List 1 x Hole Saw 1 x Hex Key 1 x Storage Box