Ejoyous 6Pcs 22-65mm Cemented Carbide Hole Saw Bit Metalworking Cutter Tool 22/30/35/45/50/65mm Features: -Can be used to make large holes in thin steel sheet, aluminum alloy and other soft metal sheet. -Made of high quality cemented carbide for durability and long service life. -The blade is extremely sharped, and resistance to cutting. Have good perforation capability. -Taking the form of a short open cylinder with saw-teeth on the open edge, it is used for making relatively large holes in thin material. -There are 6 hole saws in different sizes that you can use to open different holes. Specifications: Material: Cemented Carbide Diameter: 22mm / 0.87in, 30mm / 1.18in, 35mm /1.38in, 45mm /1.77in, 50mm /1.97in, 65mm /2.56in Shank diameter: Approx.10mm / 0.39in Applicable metal thickness: 2-3mm Quantity: 1 set (6pcs) Weight: 858g Package included: 6 x Hole Saw