Features Reusable and : Sharp carbide tip ensures long-lasting performance, and it can be easily sharpened for reuse, saving you money and time. Adjustable Hole Diameter: The distance from the drill bit tip to the center allows for easy adjustment of the hole diameter, providing versatility for various projects. Heat Treated Alloy Steel: Crafted from heat-treated alloy steel, this drill bit set is suitable for thin-film plates, ensuring durability and precision in your woodworking projects. Compatible with Electric and Bench Drills: Easily install and operate this drill bit set on electric drills and bench drills, providing convenience and flexibility in your woodworking tasks. Versatile Applications: Widely used in wooden boards, plastic boards, gypsum boards, and more, offering versatility for your DIY woodworking projects. Features: 1、Sharp and carbide tip can be reused after grinding. 2、The hole diameter can be adjusted by the distance from the drill bit tip to the center. 3、Alloy steel with heat treatment can be used for thin？film plate. 4、Can be installed and operated on the electric drill and bench drill. 5、Widely used in wooden board, plastic board, gypsum board, etc. Specification: Features: 1. Sharp and carbide tip can be reused after grinding. 2. The hole diameter can be adjusted by the distance from the drill bit tip to the center. 3. Alloy steel with heat treatment can be used for thin-film plate. 4. Can be installed and operated on the electric drill and bench drill. 5. Widely used in wooden board, plastic board, gypsum board, etc. Specification: Material: alloy steel Color: silver Shape: airplane Hole diameter range: 30-300mm / 1.18-11.81in Weight: Approx. 518g Package Includes: 1 x Adjustable Hole Saw Drill Bit Set Note: 1. Before starting , check if all the screws are tightened. 2. Be sure to hold it during to prevent accidents. 3. When replacing the drill, it is necessary to cut off the power. 4. Cuttings generated during drilling should be cleaned by special tools rather than hand. 5. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List