One of our favorite detailing tools that we use in the Auto Obsessed Detailing Studio is the OBSSSSD Series Wheel Woolies brushes.
These brushes have many uses, such as reaching all the difficult areas in the rims, between spokes, around calipers, hubs and full barrels. They can be used for washing and detailing engine bay, door jambs, wheel wells and many many otehr areas that are hard to reach and you want that perfect result.
See the full line of OBSSSSD Series Wheel Woolies brushes here: http://autoobsessed.com/shop/advanced_search_result.php?keywords=OBSSSSD+Wheel+Woolies
Braun Brush Wheel Woolies OBSSSSD