The Jeremywell 6" Caster Wheel is perfect as a trailer jack wheel replacement. Get great stability and mobility with our 6" replacement caster wheel, it attaches to the trailer jack and allows for smooth movement of the trailer, especially when coupling. This replacement is great for a wide variety of trailer jack types with a 2-inch diameter tube and has a capacity of up to 1,200 lbs. Safely install the wheel onto the jack by securing it with the safety pin that is included.