Here we have an equalizer bar for trailers that have more than one axle. This one is called an EQ-310. It is the tallest of the equalizer bars that we have that are designed for use with 1 3/4 inch wide leaf springs. It is hot dipped galvanized to prevent rust. It has 9/16 inch Inner Diameter nylon bushings. This rocker bar will make your trailer sit taller (or higher off the ground) than our other equalizer bars. The bar is solid steel and hot-dipped galvanized. It measures 1 3/4 inches wide, 4" inches tall from the center of the bottom holes to the center of the top hole, and is 6 1/16 inches long from center to center across the two bottom holes.
The 9/16 Inner Diameter bushing that comes pre-installed is suitable for most land trailers. If the purpose of this equalizer bar is for a boat trailer, you will most likely need to replace that bushing with a bushing with a 1/2 inch inner diameter. The appropriate one for this Equalizer bar measures 11/16 Outer Diameter, available here Trailer Leaf Spring Bushing 1/2 inch ID, 11/16 inch OD