OTC CA580523 Replacement Connected Adapter for OTC's CA6630 Connected Adapter Ball Joint Professional Kit. Adapter can also be added to the CA7149 Connected Adapter Ball Joint Starter Kit for additional vehicle coverage. 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).