CasterHQ 8 x 2 Steel Wheel Casters Set of 4 Casters 2 Swivel Casters and 2

The Swivel Caster Forks contain Double Ball Raceways, Zinc Plated Finish for added rust resistance, 1/4 Thick Cold Forged Yoke Legs and Mounting Plate for extra heavy duty applications. The Mounting Plate size is your industrial standard 4" x 4-1/2" overall size.