the backpack sits close to the body and always stays in place

Perfect for all bike chains

Does it fold up for storage: It is able to be folded down when not in use

Chainring: Comes with a 32t chainring included

Zeno Emergency Hydraulic Bleed Kit - Bleeding Tool - Black PLP|Largest Cog the backpack sits close toZeno's Emergency Brake Bleed Kit weighs only 19 20. 4 grams!The weight does not include fluid and varies depending on different adapter. The small size is convenient for storage. You'll find that this kit can easily fit into your jersey pocket or saddlebag, ready to to bleed your brake lever at any location and time. Wide Range of Applications Including five different adapters, ensuring compatibility with your brake levers. Remember to fill the