Specifications:Diameter: 42mm / 1.65"Thread: M10Drilling Depth: 59mm / 2.32"Overall Length: 69mm / 2.72"Tip Material: Sintered DiamondBody Material: Carbon SteelFit For: Angle GrinderSurface Treatment: Electrostatic Powder CoatingMain Color: BlueDescriptions:1. Diamond Core Drill Bits can be used for cutting holes in concrete, stones, bricks, blocks, masonry.2. Can be Wet or Dry use. Used with water for cooling and lubrication can prolong its using life.3. Easily operate on the Angle Grinder. Need an adapter for drill or other machine, such as hex, round shank etc. (not included here).4. Large clearance hole facilitate the entrance of cooling water and the escape of chips and other particles from drilling. Makes drilling process much easier.Package:1 Pcs x Diamond Core Drill Bits.