SMDD83DT70 Hamilton MaxiDuty DualWheel Swivel Caster with 8" x 3" Duralast XC® Polyurethane (70D) on Cast Iron Wheel with 1 1/4" Precision Tapered Roller Bearings Caster Specs Swivel Construction 5/8" thick drop forged steel mounting plate (rigid plate 1/2" thick); 3/8" x 5" plate steel contoured legs are welded inside and outside to forged steel horn base. Product Finish Powder Coated Caster rigs are powder coated with Hamilton’s new Platinum Powder, a metallic HAA Polyester providing a premium look and excellent durability for both interior and exterior environments. Axle 1 1/4" diameter grade 5 hex head with slotted nut and cotter pin. Lubrication Fittings Ballcheck type in swivel assembly and in wheel hubs with tapered or straight roller bearings. Load Capacity (lbs.): 6500 Wheel Diameter: 8 Wheel Face: 3 Overall Height: 11 Bearing Type: Tapered Caster Rig Type: Forged Steel Wheel Type: Duralast XC® Replacement Wheel: W830DT7011/4 Caster Color: Platinum Powder Wheel Specs Type: Duralast XC® Material: Polyurethane Cushioning(Resilience): Medium Impact R