Avantipro cut-off discs contain a silicon carbide formulation for fast material removal and extended cutting life. For use on masonry and concrete applications. Provides high performance and durability when cutting masonry with high speed cut-off machines. Various sizes include 3" x 1/16" thickness x 3/8" arbor, 4" x 1/16" thickness x 5/8" arbor, 4-1/2" x 1/16" thickness x 7/8" arbor and a 7" x 1/8" thickness x 5/8" arbor