Feature:FOR VARIOUS MATERIAL: This metal hole saw set is ideal for drilling holes in sheet metal, wood, plastic, aluminum, etc., especially for sheet metalFAST CUTTING HOlE SAW DRILL SET: Hole saws feature alternating tooth sizes for improved performance, cutting faster and longer in wood, metal and plastic materialsVERSATILE WITH QUICK REMOVAL: Hole saw drill bit set fits all brands and sizes, simplifies diameter changes with quick removal plugs and tool less installationEXCELLENT HSS MATERIAL: Carbide hole saw kit made of good quality high speed steel material, with good strength and toughness, with higher hot hardness and durabilityPRACTICAL ACCESSORIES: Bimetal hole saw kit with accessories such as thread converter, hex wrench, etc., which is convenient for you to install, replace and useSpecification:Item Type: Hole Saw KitMaterial: High speed steelHole Opener Specifications: Approx. 19mm / 0.7in22mm / 0.9in29mm / 1.1in35mm / 1.4in38mm / 1.5in44mm / 1.7in51mm / 2in54mm / 2.1in57mm / 2.2in64mm / 2.5inPackage List:10 x Metal Hole Saw2 x Twist Drill(A2 and A4)1 x Positioning Drill2 x Hex Wrench1 x Thread Converter1 x Storage BoxNote:Pay attention to correct operation.