Feature: 1. 13 Sizes Hole Saws: This professional hole saw set includes 13 sizes of hole saws, twisting drill bit, extension rod, positioning drill bit, thread converter and hex wrench, meet your different needs 2. Universal: This hole cutter kit fits all brands and sizes, used to simplify diameter changes with quick removal plugs and tool less installation 3. High Performance: Hole saws have alternating tooth sizes that can improve performance, which has faster cutting speed and longer in use 4. Equipped with Storage Box: The set comes with a storage box, these hole cutting tools are easy to store and carry, convenient for use when working outdoors 5. Application: This hole drill tool kit is ideal for drilling holes in sheet metal, wood, plastic, plasterboard, aluminum, etc. Specification: Item Type: Hole Saw Kit Material: High speed steel Hole Saw Specifications: Approx. 19mm/0.7in, 20mm/0.8in, 22mm/0.9in, 25mm/1in, 29mm/1.1in, 32mm/1.3in, 35mm/1.4in, 38mm/1.5in, 44mm/1.7in, 51mm/2in, 57mm/2.2in, 64mm/2.5in, 76mm/3in. Package List: 13 x Hole Saw2 x Twisting Drill Bit1 x Extension Rod2 x Positioning Drill Bit1 x Thread Converter2 x Hex Wrench1 x Storage Box Note: Pay attention to the correct operation.