Features: <br>1. Sharp and durable carbide tip can be reused after grinding. <br>2. The hole diameter can be adjusted by the distance from the drill bit tip to the center. <br>3. Alloy steel with heat treatment can be used for thin-film plate. <br>4. Can be installed and operated on the electric drill and bench drill. <br>5. Widely used in wooden board, plastic board, gypsum board, etc. <br> <br>Specifications: <br>Material: alloy steel <br>Color: black <br>Shape: airplane <br>Hole diameter range: 30-120mm / 1.18-4.72in <br>Weight: Approx. 337g <br> <br>Package Includes: <br>1 x Adjustable Hole Saw Drill Bit Set <br> <br>Note: <br>1. Before starting operation, check if all the screws are tightened. <br>2. Be sure to hold it during operation to prevent accidents. <br>3. When replacing the drill, it is necessary to cut off the power. <br>4. Cuttings generated during drilling should be cleaned by special tools rather than hand.<br>1、Sharp and durable carbide tip can be reused after grinding. <br>2、The hole diameter can be adjusted by the distance from the drill bit tip to the center. <br>3、Alloy steel with heat treatment can be used for thin-film plate. <br>4、Can be installed and operated on the electric drill and bench drill. <br>5、Widely used in wooden board, plastic board, gypsum board, etc.