Features Durable Hard Alloy Construction: The main body is crafted from hard alloy, significantly extending the tool's lifespan while enhancing overall work efficiency Precision Cutting Performance: Features sharp cutting edges for clean, smooth openings without broken edges, minimizing cutting resistance for easier operation Innovative Tooth Design: The front and rear inclined tooth shape reduces resistance and boosts perforation capability, ensuring faster hole opening Versatile Application Use: Ideal for creating holes in various materials, including steel, aluminum, plastic, and more, making it perfect for industrial and electrician tasks Professional Quality Assurance: Manufactured with superb craftsmanship and high accuracy, delivering reliable performance that meets the demands of professionals Features: 1、The main part of the hole opener is made of hard alloy, which can effectively extend the service life and increase the work efficiency. 2、The cutting edge is sharp, the opening is neat, smooth, without broke edges, and the cutting resistance is small. 3、The front and rear inclined tooth？shaped design has low resistance and strong perforation ability. 4、Wide range of applications and can be used to open holes in steel plate, iron plate, stainl steel, aluminum plate, calcium silicate plate, plastic plate, resin plate, FRP plate. 5、Profional manufacturing, superb craftsmanship and high accuracy help to provide the best performance. Specification: Item Type: Hole Saw Cutter Material: Hard Alloy Purpose: Can be used to open holes for steel plate, iron plate, stainl steel, aluminum plate, calcium silicate plate, plastic plate, resin plate, FRP plate. Plate Cutting Thickn: Approx. m/0.1in Total Length: Approx. 88mm/3.5in Inner Wall Thickn: Approx. 20mm/0.8in Shank Diameter: Approx. 9.8mm/0.4in Package List: 2 x Hole Saw Cutter 2 x Spring 2 x Hex Wrench Note: Not suitable for hand drills and impact drills, as well as ceramic tiles, concrete, walls, stone and other materials. Package List 2 x Hole Saw Cutter 2 x Spring 2 x Hex Wrench