Features and Benefits:�1", 20MM Arbor�Desgined to be used Wet or Dry�Extended Life�Fast Cutting�For use in concrete-lined cast iron pipeMilwaukee 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.