Park Tool BCB4. 2 Bike Cleaning Brush Set A happy bike is a happy ride. Keep your bike clean and running smoothly with the Park Tool BCB4. 2 Bike Cleaning Brush Set. It's a 4-piece brush set that is made for the sole purpose of cleaning bikes. Every Brush is ergonomically designed with dual density, sure grip handles. Features 1 GSC-1 Gear Clean Brush 1 Tapered Detail Brush 1 Frame Cleaning Sponge/Bristle Brush 1 Soft Bristle Soaping Brush Related Articles: BIKE WASHING AND CLEANING Manufacturer's Part No: BCB-4. 2 UPC: 763477000545 | Park Tool | Bcb4. 2 Bike Cleaning Brush Set | Blue | 4 Cleaning Brushes