Red 450 B-R for cutting a wide range of aggregates * Asphalt over concrete or asphalt with hard aggregate- standard undercut retardant. * Job Size: Medium to Large. Blade Size: 14 x .125 x 1. Depth of Cut: 4 5/8 * Grade: Super Premium. Material Being Cut: Green Concrete, Asphalt over Concrete * Cut Method: Wet. Weld Type: Laser Weld.