Features Durable Cemented Carbide Construction: Designed to withstand tough applications, extending the service life of the tool for long-lasting performance Versatile Material Compatibility: Effortlessly drills through steel plate, stainless steel, resin plate, and FRP, making it ideal for various projects Precision Cutting Edge: Enjoy clean and smooth openings without broken edges, reducing the need for additional finishing work Enhanced Perforation Efficiency: Features a front and back angle tooth design, ensuring low resistance and improved cutting speed for effective results Ideal for Electricians and Professionals: Specifically designed for use with electric drills, this tool is not suitable for hand drills or impact drills, ensuring optimal performance Features: 1、The main body is made of cemented carbide, which effectively extends the service life. 2、Compatible with a variety of materials, work more efficiently, can be used for steel plate, stainl steel, resin plate, FRP plate hole opener. 3、The cutting edge is sharping, the opening is neat and smoothly without broken edges, and the cutting resistance is small. 4、Front and back angle tooth design, low resistance and strong perforation ability. 5、Not suitable for hand drills and impact drills, as well as ceramic tiles, concrete, wall, stone and other materials. Specification: Item Type: Carbide Hole Saw Drill Bit Material: Carbide Purpose: Steel plate iron plate, stainl steel, aluminum plate, calcium silicate plate, plastic plate, resin plate, FRP plate opening, etc. Plate Cutting Thickn: Approx. m / 0.1in Total Length: Approx. 88mm / 3.5in Inner Wall Thickn: Approx. 20mm / 0.8in Shank Diameter: φApprox. 9.8mm / 0.4in Hole Diameter Specification: φApprox. 40mm / 1.6in 42mm / 1.7in 45mm / 1.8in 48mm / 1.9in Package List: 1 x Hole Saw Drill Bit 1 x Spring 1 x Hex Wrench Note: Not suitable for hand drills and impact drills, as well as ceramic tiles, concrete, wall, stone and other materials. Package List 1 x Hole Saw Drill Bit 1 x Spring 1 x Hex Wrench