Zinc-Plated U-Bolt, 2-1/8"W x 4"L, pair
These heavy-duty U-bolts are designed for mounting brackets to trailer channels. 4" long with 2-1/8"W opening. Measures 2-1/2" center-to-center of bolts. Bolts are 7/16"-14. Includes two U-bolts, four flat washers, and four nylon lock nuts.
Zinc-Plated U-Bolt, 2-1/8"W x 4"L, pair Review
Tie Down Engineering Zinc-Plated U-Bolt, 2-1/8"W x 4"L, pair is just amazing! It is much worth than what you pay at Overton's.