Master link chain: Is made of quality steel compatible with straight chain lines and widely spaced sprockets. suitable for 9, speed bike chain , black color, on mountain bikes and road bikes.Compatible: Quick bike chain links pieces are easy to install, remove and reuse, its smooth edge would not damage bike chain and good for smooth chain rotation. Suitable for MTB and road bikes with 9 speed.DURABLE AND GOOD QUALITY MATERIAL: This bike chain connector is made of durable steel material, fine edge master links witHIGH-tech treatment, machine precision, robust, tough and suitable for a long-term useQuantity: 10 pairs of 9 speed chain repair links, each pair contains metal Link Plate, Pin, Bush, Roller, Roller Link. Note: Due to the light and screen setting difference, the item's color may be slightly different from the picturesMUST HAVE: Bikers keep Master link chain connector as a must have tool in their tool box, so that there is no stopping to your cycling adventures. This master link makes sure to provide their valued customers with the vast range of quality bike accessories