pLACKMOND Diamond Blade, Turbo Wavy Core, Series PRM Series, 4 in Diameter Blade, 58 to 78 in ArborShank, 0085 in Cutting Width, DryWet Cutting Condition, 8 mm Segment Height, 0085 in Kerf, Sintered Bond, 15000 rpm Maximum, Applicable Materials Cured Concrete and Hard MaterialsppThe PRM Series wavy core design keeps the blade cool while removing debris from the cut Ideal for use in cured concrete and harder materialsp