Replacement Connected Adapter for OTC's CA6630 Connected Adapter Ball Joint Professional Kit or use to enhance the capability of the CA7149 Connected Adapter Ball Joint Starter Kit Patented connection and adapter design uses spring-loaded stainless steel ball bearings to securely attach connected cups and adapters to the C-frame and forcing screw No O-rings or removable fasteners to lose, damage, or replace Works with most OTC ball joint kits, cups, and adapters (Not Included) Rugged, high quality materials ensure high strength and a long service life