Features 【Premium Material】Made of high quality cemented carbide for durability and long service life. 【Durable in Use】The blade is extremely sharped, and resistance to cutting. Have good perforation capability. 【High Practicality】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. 【Meet your different needs】There are 6 hole saws in different sizes that you can use to open different holes. 【Widely Use】Can be used to make large holes in thin steel sheet, aluminum alloy and other soft metal sheet. 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-m Quantity: 1 set (6pcs) Weight: 858g Package included: 6 x Hole Saw Package List