This is a Trailer Leaf Spring Bushing. This Spring Bushing can be used in many types of trailer springs and equalizer bars. Commonly referred to as a Nylon Bushing, you would insert it into the eye end of either your double eye, slipper, or reverse curve spring. The Nylon material acts as a protective barrier between the leaf spring bolt and the eye of the leaf spring itself, which prevents metal on metal contact. It would be recommended to ensure your suspension sysmtem has proper bushings installed. Overtime, these bushings get worn out, and with excess wear the leaf spring bolts can cause damage to the spring. This bushing is to used with 1 3/4" Width leaf springs.
Spring Bushing Measurements:
Outer Diameter: 11/16 inch
Inner Diameter: 9/16 inch