Feature: 1. Hole saw bit is made of high-quality cemented carbide to keep its high hardness, anti-rust, strong and durable. 2. Large sizes include 22 mm / 30 mm / 35 mm / 45 mm / 50 mm / 65 mm. Each incision is individually packed in a plastic box and each bit is oiled to prevent rust 3. As a multi-function tool, this hole saw set is suitable for kitchen drilling, magnetic drilling, gun drilling, hole drilling, etc. 4. Meanwhile, such drill bit is very suitable for stainless steel plates, square tubes, iron, cast iron, wood, F.R.P and other common metal plates. 5. With high accuracy, hole saw bit can be easy to use, which can quickly cut clean and round holes. Also it is suitable for hand-held electric drill, vertical motor-driven drilling machine and mobile ribbon magnetic drilling machine. Specification: Item Type: Drill bit Bit Size: (Approx. 22mm / 0.87in) / (Approx.30mm / 1.18in) / (Approx. 35mm / 1.38in) / (Approx. 45mm / 1.77in) / (Approx. 50mm / 1.97in) /(Approx. 65mm / 2.56in)Hole-Opening Depth: Approx. 2mm / 0.1in . Package List: 6 x Drill Bit