Shimano TL-CN10 Quick Link ToolThe Shimano TL-CN10 Quick Link Tool is specifically engineered for SM-CN900 11 Speed Quick Link, but will work with most other quick links. This precision edged nickel-chromoly steel tool is built to last. There are shaped, ergonomic composite grips for a great feel. This shop level tool is used to properly install and remove quick links.689228893238