Park Tool Bike Cleaning Brush Set BCB 4.2 SHOE COVERS 2 kg Fits round frame springsale 2 kg Fits round frame dimensions 22 80 mm Fits maximum oval frame dimensions 80x100 mm Max tire width 3 in Max wheel size (diameter) 16 29 in Max wheelbase 1235 mm Thru axle compatible ✓ Carbon frame compatible ✓ Adapter s required: Thule Carbon Frame Protector Fits roof racks with 20x20 mm T tracks ✓ Fits roof racks with 24x30 mm T tracks ✓ Adapter s required: Thule T track Adapter 889 1 Fits Thule WingBar Evo ✓ Fits Thule WingBar ✓ Fits Thule ProBar ✓ Fits Thule SquareBar ✓ Adapter s required: Thule ProRide SquareBar Adapter Fits Thule SlideBar ✓ One Key System compatible ✓ Color Black Aluminium Model number 598001 you can concentrate more on improving your technique The BCB 4 contains four brushes The comb section is for cleaning between cogs where the bristles cannot reach