Removing the rear wheel bearing retainer on your Triumph or BSA motorcycle can be a pain without the proper tool. People often use a drift and a hammer to remove and then reinstall the wheel bearing retaining ring (OEM 37-3587) that holds the wheel bearings in your rear wheel's hub. This specialty tool perfectly engages the holes in your bearing retainer ring and allows you to use your favorite ratchet to install and remove it with ease. CAD plated steel, built to last a lifetime, made in the USA. For use on most Triumphs (T110, T120, TR6, T100) and BSA (A50, A65, B25, B40, B44). Replacement for Triumph and BSA service tool OEM # 61-3694