Upgrade with Bearing 6" Trailer Jack Swivel Caster Wheel Replacement, Heavy Duty 1200lbs Capacity with Pin for Soft Ground Roll, Fits Any Boat Hitch Camper RV

["Bearing has been added to the wheel feet and tube areas, making the wheels rotate more smoothly, facilitating manual operation, and enhancing durability","Compatible with 2\" Diameter Jack Tubes，Perfect for trailer jack wheel replacement, swivel jack caster wheel for all standar jack and A-frame jack.","6\" durable poly wheel for long-lasting corrosion resistance, keep your trailer stable and safe.","The set includes a pin to ensure a secure connection to hitch, making installation quick and hassle-free.","This wheels degign support up to 1200lbs for trailer tongue weight，Finish ZINC，"]