General description This hole saw kit contains 13 bi-metal hole saw blades, 13 chucks, 13 drills and a storage box. Each item is carefully packaged individually to prevent damage during use. The blades are made of high-speed steel, which provides resistance to high temperatures and a long service life. Blade diameters vary from 18 to 75 mm, with a maximum cutting depth of 25 mm. Technical specifications Number of blades: 13 Blade diameters: 18, 20, 22, 25, 28, 30, 35, 38, 45, 50, 55, 65, 75 mm Maximum cutting depth: 25 mm Blade material: High-speed steel Recommended rotation speed: RPM ≤ 1000 Compatibility and accessories Compatible with: Bench drills, pillar drills, pistol drills. Various hand drills. Included accessories: 13 chucks, 13 drills. Application: This set is ideal for drilling in various materials such as metal pipes, castings, aluminum alloys, plastic sheets, galvanized pipes, wood and plasterboard. The clean design facilitates cutting and the drill's spring automatically ejects the disc after drilling. Other information