3/4" ID Round Nylon Socket

Dual Wheel Swivel Caster Bright Zinc Finish #20(2-1/2x3-5/8)Top Plate Dual 2x7/8 Advanced Elastomer Wheels Ball Bearings 400 lb Load Capacity 3-1/4" Overall Height

ROUND DOUGHNUT BUMPER 3-1/4 O.D.; 15/16 Wide; 5/16 Bolt Hole. Gray Thermoplastic rubber with metal insert.

The Darnell-Rose 85-24-PXAE-CB caster is a must have in any application.  The 5" diameter Advanced Elastomer wheel gives you the needed strength of 1000 lbs load capacity while providing durability...

Dual Wheel Rigid Caster Bright Zinc Finish #20(2-1/2x3-5/8)Top Plate Dual 2x7/8 Advanced Elastomer Wheels Ball Bearings 400 lb Load Capacity 3-1/4" Overall Height

2" x 7/8" HARD Rubber Wheel ; 3/8 Bore; 63/64" Hub Length; Ball Bearings; 125 lb Load Capacity; Compatible with Darnell 30 series casters.