Features 1、The main body of this hole saw is made of cemented carbide, which effectively extends the service life. 2、Can make holes in steel plates, iron plates, stainless steel plates, aluminum plates, calcium silicate plates, plastic plates, resin plates, and FRP plates. 3、This cutting edge is incisive, the opening is neat and glossy without broken edges, and the cutting resistance is small. 4、Thefront and rear inclination angle tooth shape design, low resistance and strong perforation ability. 5、This hole saw can be compatible with a variety of materials and work more efficiently. Specification Item Type: Carbide Hole Saw Material: Carbide Purpose: To make holes in steel plate, iron plate, stainless steel, aluminum plate, calcium silicate plate, plastic plate, resin plate, FRP plate 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. 50mm / 2in 51mm / 2.01in 53mm / 2.1in 55mm / 2.2in 60mm / 2.4in 65mm / 2.6in 70mm / 2.8in 75mm / 3in 80mm / 3.1in 85mm / 3.3in 90mm / 3.5in 95mm / 3.7in 100mm / 3.9in Package List 1 x Hole Saw 1 x Spring 1 x Hex Wrench