Feature: 1. Thanks to their high speed steel teeth and smoothly cutting edges, these hole saws can cut various materials with highly precise. 2. Made of high speed steel material, with good cutting performance, incisive and durable serrations. 3. There are a variety of different specifications to meet the needs of different scenarios at work. 4. Wide range of uses and can be used to make holes in plastic, wood, fire fighting pipes, tees, stainless steel and other materials. 5. Wide application scenarios, can be used for lithium electric drills, hand drills, bench drills, etc. Specification: Item Type: Hole Saw Kit Material: High Speed Steel Specifications: Approx. 22mm / 0.9in, Approx. 29mm / 1.1in, Approx. 35mm / 1,4in, Approx. 44mm / 1.7in, Approx. 57mm / 2.2in, Approx. 68mm / 2.7in Uses: For Plastic, Wood, Fire Fighting Pipes, Tees, Stainless Steel and Other Materials to Make Holes Applicable Scenarios: For Lithium Electric Drills, Hand Drills, Bench Drills, Etc.. Package List: 1 x Gasket6 x Hole Opener2 x Connecting Rod2 x Hex Wrench1 x Plastic Box