Ready for Anything: Fix flats and adjust on the go with our all-in-one portable tool kit. Don&';t let bike issues stop your ride - be prepared for trailside repairs with Backou Trailside Repair Kit. On-the-Go Repairs: Our travel-friendly kit includes Chain Pliers, Multi-Tool, Pedal Wrench, Mini Pump, and more. From chain problems to flat tires, tackle any hiccup and keep rolling. Kit includes: Chain Pliers: Allows you to take a chain apart Pliers Chain Tool: Allows you to remove/add pins to the chain 2x 9 speed master links 9 speed chain section 2x 11 speed master links 11 speed chain section Extra Chain Section 19mm wrench Pedal Wrench: Remove/Tighten Pedals Multi-Tool: Includes metric Allen/Hex set and screwdriver set (flat, phillips, allen) Bike Pump: Recommended 15-20 psi Tire Patch Kit: Rubber Patches (x6), Tire Irons, Tire Buffer 6 pcs 9 inch zip ties *Bakcou also highly recommends purchasing a rear derailleur hanger specific to your bike to add to your Trailside Repair Kit. Purchase a derailleur hanger HERE.