Whirlwind USA KSP 5-Inch Dry or Wet Cutting Standard Tuck Point Blade for Concrete Mortar (Factory Direct Sale) (5") Designed for repairing grout in mortar or cracks in concrete/asphalt by grinding, routing and cleaning out the joints on masonry walls or pavement. Can be used wet or dry. Sintered diffusion bonded. Segment hight 7mm. Arbor 7/8-Inch - 5/8-Inch. Size is 5"x.250"x.275"/7mm.