The interrupted cut design of the turbo blade makes for a clean cut at the good price Our turbo blade cleanly cuts through cement, pavers, concrete with rebar, natural stone, and other tough materials Every Trabo blade is embedded with quality diamonds to provide a professional grade cut at a good price Our 10mm rim results in a long life for the blade Comes complete with ⅞ Inch arbor and a ⅝ Inch brass reducer ring glued to the inside of the package for use on multiple tools Trabo 4 Inch 3 pack Masonry Turbo Rim Diamond Metal Bond Blade for Cutting Cement, Pavers, Concrete with Rebar, Natural Stone and More, 3 pieces with 7/8 Inch Arbor with 5/8 Inch Reducer Ring for use on multiple tools. This multipack allows you to have extra blades on hand.