Feature:1. WIDE APPLICATION: Carbide hole saw bit kit, commonly used for cutting metal, steel, aluminum, wood and other materials.2. 45 STEEL TEETH: The coring bit hole saw has 45 steel teeth, which has high hardness and can quickly cut clean round holes.3. NO DAMAGE: Split guide drill prevents damage and misalignment by gradually guiding the tool to the material.4. HIGH PERFORMANCE: The tip is hardened treatment with staggered cutting teeth for precise counterbore and smooth cleaning.5. EASY OPERATION: These drilling tools are compact in structure and standard in size for easy and precise operation.Specification:Item Type: Carbide Hole SawMaterial: 45 Steel + CarbideHole Saw Length: Approx. 8cm / 3.1inCoring Bit Length: Approx. 6.8cm / 2.7inPunching Depth: Approx. 25mm / 1in.Package List:1 x Hole Saw1 x Coring Drill1 x Hex Wrench1 x Storage BoxNote:Can not be used for tile, glass, cement cutting.