I installed the wheels on my convertible top. You know, the 10 x 10 guy that folds up like an umbrella and a tent had a baby. These wheels are great for this, but require a slightly larger bore. I drill a hole for the pins in the legs and install the casters there. A roll with a lock at each end. Blocking one end and pulling the opposite end opens the tent for the most part. This is a one person operation instead of two. These wheels are designed for heavy loads and can roll properly even on grass.