Features Durable Cemented Carbide Construction: The main body is crafted from high-quality cemented carbide, significantly extending the lifespan of your tool for longer-lasting performance Versatile Material Compatibility: Ideal for drilling through steel plates, stainless steel, resin plates, and FRP, ensuring efficient operation across various applications Precision Cutting Edge Design: Featuring a sharply honed cutting edge, this tool provides smooth and neat openings without broken edges, reducing the need for additional finishing Enhanced Perforation Efficiency: With a front and back angle tooth design, experience low resistance and strong perforation capabilities for faster drilling through thick materials Specific Use Recommendations: Not intended for use with hand drills or impact drills; avoid ceramic tiles, concrete, wall, stone, and other hard materials for optimal results 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