These Uriah Products U-bolts are great items to keep on hand since U-bolts are among the trailer parts that break down most often. Keeping a few in the shop allows you to monitor your trailer's existing U-bolts and replace them when they start showing wear instead of waiting for them to break when you're on the highway. These bolts accommodate 3" axles and are 7-1/4" long. They come with the nuts required for installation. | Uriah Round U-Bolt and Nut | Size 7-1/4" x 3"