Features and Benefits:?7/8", 20mm, 5/8" Arbor?Desgined to be used Wet or Dry?Extended Life?Mortar removal from masonryMilwaukee diamond blades are designed to the highest standards, only using quality diamonds. Available in sizes 4 in. to 14 in. Milwaukee's diamond blade line will cover a full range of materials including specialized blades for green concrete, asphalt, and ductile iron. All Milwaukee blades are designed for both wet and dry cutting.