971 Crain Carbide Power Groover Blade is a replacement carbide-tipped blade for the Crain No. 968 Power Groover. It is a 12 tooth 130 mm diameter x 3.3 mm wide blade which can also be used on other groovers that take this size blade. It cuts a trapezoidal-shaped groove in the material. It is not for use on metal impregnated safety floors. This blade is resharpen-able. For safety floors, see the No. 972 Diamond Groover Blade.