This is a kit to change all the "wear parts" on a standard tandem axle trailer (4,000 # GVW up to 14,000# GVW) .
This is for standard "Eye to Eye " Springs, not "slipper" springs (bolt on one end of spring only), For standard 1 3/4" wide springs.
This Kit includes GREASABLE WET BOLTS. Tired of replacing the suspension bolts on your trailer? With these wet bolts, you could add THOUSANDS of miles on to your trailer.