Features Adjustable hole diameter: Easily adjust the hole diameter from 30mm to 200mm by varying the distance from the drill bit tip to the center, providing versatility for different projects. carbide tip: The sharp and carbide tip can be easily re-sharpened, ensuring long-lasting performance and cost savings over time. Versatile material compatibility: Made of heat-treated alloy steel, this drill bit set is suitable for use on wooden boards, plastic boards, gypsum boards, and thin-film plates, offering flexibility for various applications. Compatible with electric and bench drills: Install and operate the drill bit on electric drills and bench drills for efficient and convenient usage. Wide application: Ideal for woodworking projects, this drill bit set is widely used for creating holes in wooden boards, plastic boards, and gypsum boards, making it a valuable addition to any DIY enthusiast's toolkit. 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: black Shape: airplane Hole diameter range: 30-200mm / 1.18-7.87in Weight: Approx. 450g 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. Package List