A high quality four brush set, Peatys Bicycle brushes consist of:
The Bog brush: a big soft brush suitable for the whole bike.
Detail Brush: Poke into and clean all the awkward corners and recesses.
Drivetrain Brush: Angled to keep your hands away from spokes and cassettes and tough enough for stubborn grime.
Tire Brush: Stiff and stepped to efficiently clean between the treads.