Feature: 1. C45 Steel Teeth: This is core drill bit hole saw, whih is made with C45 steel teeth to quickly cut clean round holes 2. Prevent Damage: This split pilot drill prevents damage and misalignment by gradually guiding the tool to the material 3. Wide Range of Applications: This hole distance drill can be used for cutting tools in steel, metal, aluminum, wood, etc. 4. Precise Drilling: The tip is hardened and designed to be pointed with staggered cutting teeth for precise countersinking and fluent cleaning 5. Carbide Material: This hole spacing drill is made of carbide to ensure that the hole spacing drill has high hardness, rust resistance and robustness Specification: Item Type: Carbide Hole Saw Material: C45 Steel + CarbideSize: Hole Saw Length: Approx. 8cm / 3.15in, Pilot Drill Length: Approx. 6.8cm / 2.68in Punching Depth: Approx. 25mm / 1.00in. Package List: 1 x Carbide Teeth Hole Saw 1 x Pilot Bit1 x Hex Screwdriver1 x Storage Box Note: Can not be used for tile, glass, cement cutting