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 6/7/8/9/10 speed chain. 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. 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. Bike Chain Checker: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. 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. Type:Multifunction Tools Bike Chain Wear Indicator:Repair Tool Cycling Bicycle bike accessories:Cycling Chain Checker Kits Bike Chain Wear Indicators:Bike Chain Wear Indicator Tools Chain Checker Kits:Gauge Checker colour:black material:Stainless steel + ABS size:16.8x6x2cm Package Contents: 1 * pliers 1 * Chain cutter 1 * Checker 6 * Magic buckle Only 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.