Feature:1. 45 STEEL TEETH: The coring bit hole saw is made of 45 steel teeth with high hardness and can quickly cut clean round holes.2. NO DAMAGE: Split guide drill prevents damage and misalignment by gradually guiding the tool to the material.3. APPLICABLE MATERIALS: This hole saw kit can be used in a wide range of materials such as steel, metal, aluminum, wood, etc.4. HIGH PERFORMANCE: Hardened treatment tip with staggered cutting teeth for precise counterbore and smoother cleaning.5. STANDARD SIZES: The hole saw and coring bit have standard sizes and compact structure, which are easy to use.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.