Shimano Altus BR CT91 Cantilever Brake Calipers Includes link wire. M-system shoes. Brakes arent complicated. If you roll, you need to stop. Not only will the Shimano Altus cantilever rim brake slow your roll, it will do it time again and with the precision you demand. It is surprisingly simple in design for how much braking power it produces.The aluminum design is light and actuates quickly. Pads are easy to change and install. Mounts to your frame in only a few minutes time. SPECIFICATIONSColor SilverShimano Model BR-CT91Side: Front (can also be used as rear)Aluminum constructionIncludes link wireM-system shoes UPC code : 689228011335Manufacturer # : EBRCT91MMFSA Original Shimano parts guarantees that all components work perfectly for optimum performance and maximum safety and longevity.