SK-4 Home Mechanic Starter KitA perfect way to start a bicycle tool collection! A great combination of tools to help a home mechanic clean, adjust, maintain, and do some basic repairs on their bike. The SK 4 includes more than 15 genuine Park Tool products that can perform dozens of tasks, and includes a custom Park Tool toolbox with extra room for spare parts and more tools. INCLUDES: AWS 10 Fold Up Hex Wrench Set BBB 4 Big Blue Book of Bicycle Repair 4th Edition CC 3. 2 Chain