The kit contains three brushes, Large (18" OAL, 3" dia. head), Medium (12" OAL, 2" dia) and Small (8" OAL, 1" dia.). The soft, dense carpet fibers will hold suds and transfer them to the wheel. These brushes are made entirely of polypropylene and will stand up to any cleaner you choose to use. Since they are 100% polypropylene, they are recyclable.
Due to the fact these brushes are made of polyproylene, these brushes will not scratch up or splatter like most twisted wire spoke brushes.
The Large Wheel Woolie is used to reach deep into the wheels or clean the wheel wells of any vehicle, from cars to RVs. The Medium Wheel Woolie is ideal for smaller wheel gaps, air diffusers, door jams, engine areas, etc. The Small Wheel Woolie is best for small gaps, like grills, and narrow spoke wheels.