Features FAST CUTTING: Hole saws feature alternating tooth sizes for improved performance, cutting faster and longer in wood, metal and plastic materials EXCELLENT HSS MATERIAL: Made of good quality high speed steel material, with good strength and toughness, with higher hot hardness and durability FOR VARIOUS MATERIAL: Ideal for drilling holes in sheet metal, wood, plastic, aluminum, etc., especially for sheet metal VERSATILE WITH QUICK REMOVAL: Fits all brands and sizes, simplifies diameter changes with quick removal plugs and tool less installation PRACTICAL ACCESSORIES: With accessories such as thread converter, hex wrench, etc., which is convenient for you to install, replace and use Specification: Item Type: Hole Saw Kit Material: High speed steel Hole Opener Specifications: Approx. 19mm / 0.7in 22mm / 0.9in 29mm / 1.1in 35mm / 1.4in 38mm / 1.5in 44mm / 1.7in 51mm / 2in 54mm / 2.1in 57mm / 2.2in 64mm / 2.5in Package List: 10 x Metal Hole Saw 2 x Twist Drill(A2 and A4) 1 x Positioning Drill 2 x Hex Wrench 1 x Thread Converter 1 x Storage Box Note:Pay attention to correct operation. Package List 10 x Metal Hole Saw 2 x Twist Drill(A2 and A4) 1 x Positioning Drill 2 x Hex Wrench 1 x Thread Converter 1 x Storage Box