This Specific Galvanized U-Bolt Kit is used for Round Boat Trailer Axles that measure 2 3/8 inches in diameter. While less common, Round Tubed Boat Trailer Axles are out there. This Axle Tie Plate Kit is Hot-Dipped Galvanized and will mount your 1 3/4 inch wide leaf springs to you Round Tube Boat Trailer Axle. Most 2 3/8 inch Round Tubed Axles are 3500lb Capacity Trailer Axles with 13-15 inch Trailer Tires. The U-Bolts are 1/2 inch in diameter, plenty strong to handle your trailers weight.
(2) Hot-Dipped Galvanized 5 Hole Mounting Plates
(4) 1/2 in x 2 3/8 in x 5 1/4 inch Round Galvanized U-Bolts
(8) Galvanized Nuts
(8) Galvanized Lock Washers