PFERD Large diameter cut-off wheel manufactured with a combination of heavy reinforcement and a high concentration of premium abrasive grain, they are the preferred brand of professional contractors, demolition personnel, rescue personnel and municipalities. Performance metal-cutting wheels for use on steel and ferrous metals. Aggressive cutting action and long service life. For use on electric or gas-powered portable cut-off saws. Specification: Flat Type 1; 14" Diameter x 3/16" Thickness; 4.5 mm Thickness; Bore Size 20 mm; Max. RPM 5500.