Feature:1. QUICKLY CUT: Coring bit hole saw is made of 45 steel teeth for quickly cutting round holes, saving both labour and time2. SPLIT TO PREVENT DAMAGE: Split pilot drill can prevent damage and deviation by guiding the tool step by step to the material, very practical3. FOR VARIOUS MATERIALS: This cutting tool is suitable for steel, metal, aluminum, wood, etc., support various materials, more convenient4. ACCURATE CUTTING AND : The tip is hardened and designed to be of sharpness with staggered cutting teeth for accurate counterbore and 5. DURABLE CARBIDE: Carbide material possess high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistanceSpecification:Item Type: Tungsten Carbide Teeth Hole SawMaterial: 45 Steel + carbideSize: Hole Saw Length: Approx. 8cm / 3.1in, Core Drill Length: Approx. 6.8cm / 2.7inPunching Depth: Approx. 25mm / 0.98in Package List:1 x Hole Saw1 x Coring Drill1 x Hex Screwdriver1 x Storage BoxNote:Can not be used for tile, glass, cement cutting.