DELIUS KLASING

Park Tool Bbb-4 The Big Blue Book Black/Silver One Size is the ultimate guide for bike repair enthusiasts.12-speed and 1x drivetrain: Updated with the latest information on tubeless tyres and electronic switch.Updated standards: Includes troubleshooting tables, headset, and bottom bracket standards.Comprehensive repair guide: Written by Calvin Jones, Director of Education at Park Tool, with clear instructions and high-quality photos.