6" x 3" Heavy Duty Drop Forged Rigid Caster6" x 3" Heavy Duty Drop Forged Rigid Caster Introducing the robust and efficient 56PU60LG2425YY Heavy Duty Caster, designed for superior durability and reliability. This drop forged rigid caster features a "Polyon" mold on polyurethane cast iron wheel, ideal for handling heavy loads with ease while providing floor protection and noise reduction. The caster's green and black wheel measures 6 inches in outer diameter with a 3 inch tread width, ensuring