WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.
0493115 242330 Open-end wrench MW
NOTE:
(Open-end wrench) Open-end wrench 1/2" for adjusting the brake band [Discontinued]