Features Superior Cutting Performance: Sharp carbide tip ensures precise cuts and can be reused after grinding for long-lasting efficiency Versatile Diameter Adjustment: Easily adjust the hole diameter from 30mm to 120mm by changing the distance from the drill bit tip Durable Alloy Steel Construction: Heat-treated alloy steel design withstands wear and tear, suitable for various materials including thin-film plates Compatible with Most Drills: Designed for seamless installation on both electric drills and bench drills, enhancing your DIY experience Multi-Material Application: Ideal for use on wooden boards, plastic boards, gypsum boards, and more, making it perfect for diverse 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: 30-120mm / 1.18-4.72in Weight: Approx. 338g 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 necary to cut off the power. 4. Cuttings generated during drilling should be cleaned by special tools rather than hand. Package List