Welcome to our shop! 1. Crafted with a durable carbide body for extended lifespan. 2. This hole saw cutter effortlessly drills through steel plates, iron plates, stainless steel plates, aluminum plates, calcium silicate plates, plastic plates, resin plates, and FRP plates. 3. Features a sharp cutting edge for clean, glossy holes with no burrs and minimal cutting resistance. 4. Designed with front and rear rake angle teeth for low resistance and powerful perforation. 5. The carbide hole saw is compatible with a variety of materials for efficient operation. Item Type: Carbide Hole Cutter Material: Carbide Purpose: Drilling holes in steel plates, iron plates, stainless steel, aluminum plates, calcium silicate plates, plastic plates, resin plates, FRP plates Plate Cutting Thickness: Approx. 3mm / 0.1in Total Length: Approx. 88mm / 3.5in Inner Wall Thickness: Approx. 20mm / 0.8in Shank Diameter: Approx. 9.8mm / 0.4in Hole Diameter Specification: Approx. 16mm / 0.63in 16.5mm / 0.65in 17mm / 0.67in 17.5mm / 0.69in 18mm / 0.71in 18.5mm / 0.73in 19mm / 0.75in 19.5mm / 0.77in Package Includes: 2 x Hole Saw 2 x Spring 2 x Hex Wrench Your 100% satisfaction is our top priority. We are committed to providing you with the best service. If you encounter any issues upon receiving the product, such as damage or incorrect quantity, please contact us immediately, and we will provide you with the best solution!