The Hendrickson Auxiliary Axle Eccentric Collar is a practical and reliable solution for your suspension needs. With an inner diameter of 7/8" and an outside diameter of 4", this collar is zinc-plated for corrosion protection, ensuring durability and longevity. Designed to be used with Hendrickson Quick-Align Suspensions with Tri-Functional Bushings, it also fits OE parts such as Automann MHS99, Dayton Parts 334-1573, Euclid E-10754, Flagg HT243, and Hendrickson Auxiliary Axle S-20925. This collar is sold individually and should not be welded. Trust in its quality and compatibility for your suspension system.