SHIMANO TL-CN35 12-SPEED CHAIN TOOLChain tools are incredibly important when it comes to the installation and removal of chains. Chains typically come longer than what's needed and need to be cut in order to fit properly on a bike. Now with 12-speed drivetrains becoming a thing in the mountain biking world, you'll need a 12-speed chain tool in order to properly size your chain. The Shimano TL-CN35 12-Speed Chain Tool is designed to be a shop quality chain tool. It is made for 12-speed chains but will also work with 9 to 11-speed chains. If you're going 12-speed on your mountain bike, don't forget to pick up a Shimano TL-CN35 12-Speed Chain Tool. Features Shop quality chain tool designed to be used multiple times a day, every day Works with 12-speed chains but will also work with 9 to 11-speed chains Resizes chains and helps with installation and removal | Shimano | Tl-Cn35 12 Speed Chain Tool For Shimano | 12 Speed Chains