1.Multi Function, Complete Tools-The kit contains a bike master link pliers, bike wear indicator chain checker, chain breaker splitter tool and 3 pairs missing link connector for 8/9/10 speed chain. Made by superior durable material and perfect match for all your bike chain repair.2. Bike Link Pliers-It is chain master link remover and connector, works for all chains and connectors. The anti-slip handles and middle spring help to control the pliers easily. There is safety pin protect from over opening and a clasp on the bottom help for collecting two handles for storage.3.Bike Chain Breaker Splitter with Chain Hook -The chain breaker splitter is designed to remove and install pins to change the worn chain. Accompanying iron hook could help to hold the chain sturdily, to prevent the chain springing and hurting bikers. With a replacement thimble build-in handle, which could be used to replace in case of the thimble damage by improper operation. Metal frame ensures the strength and durability, rubber handle offer comfortable and anti-slip grip.4. Bike Chain Checker-When the chain need to be replaced? Use this checker to measure the state of your chain. It is possible to measure broken chains at any time. If the 0.75 or 1.0 tooth will pass all the way through bike chain, which means it is worn and must be replaced immediately.5. Bicycle Missing Link-These magic chain buckles help for temporary use or repair bike chain when you have a broken chain on the trail or road. It could be reusable, easy to assemble and disassemble. Make the chain cleaning and maintenance process much easier. The chain magic buckles mainly for 8/9/10 speed chains. It is suitable for BMX bike, folding bike, mountain bike, road bike, etc.Size:17cm Material:metalColour:Black + silverPackage Contents:1 * Chain Wear Indicator1 * Chain Breaker Splitter1 * Bike chain li pliers3 * Bike LinksOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.