Enjoy the convenience of the Topeak Plug n Chain Tool 13s - a compact chain tool kit neatly housed within your mountain bike's handlebar ends. This handy accessory ensures you're always prepared, featuring a CrMo steel chain tool adept at managing single and multi-speed chains up to 13 speed. With compatibility extending to SRAM Flattop chains and Campagnolo hollow pin chains, it s a cyclist s essential for on-the-go adjustments.Ease of Access: Hidden within the handlebar ends and easy to reach, this compact tool kit ensures you have the essentials on hand whenever the need arises. It fits handlebars with a minimum of 102mm straight section and ID range ø18 - ø21.2 mm.Durability and Versatility: Made of hardened steel and engineering grade polymer, the CrMo steel chain tool is designed to work efficiently with single and multi-speed chains up to 13 speed, making it a reliable companion for various cycling scenarios.Convenient Usability: At a lightweight 52g and compact size of 10.8 x 2