●FEATURE: Made of High Quality Steel Material. Color: Silver. Surface Finish: Galvanized. ●SPECIFICATIONS--1/2 inch diameter U-Bolt: 1/2 inch diameter ; 3 1/16 inch wide between the legs; 4 5/16 inch Long from the inside down ; 1/2 - 13 inch thread size; Galvanized to prevent corrosion. ●PACKAGE INCLUDING: 4 x 1/2"x 3 1/16"x 4 5/16" Squared U-Bolt + 8 x Galvanized Nuts + 8 x Galvanized lock washers + 8 x Galvanized flat washers. ( Installation Hardware is Included - As the pictures show.) ●FITMENT: These galvanized square U-Bolt were well crafted, can be used on trailers, boats or any other application that fits. ●INSTALLATION: Easy Snap-in Installation. ** Installation Instruction Not Included.**