The Lindarets x Wolf Tooth Tanpan brings the range and security of Shimano mountain rear derailleurs to Shimano-equipped drop-bar bicycles Greater gearing range for bigger adventures, better chain security for rough terrain, and lighter weight and reduced complexity for the daily commute Amplifies road shifter cable pull to allow for seamless communication with mountain derailleurs ideal for riders looking to convert their road, gravel, cyclocross, or commuter bike to the simplicity and light weight of a single chainring- or for those whose riding demands lower gearing than a typical road double can provide Tucks neatly above the rear derailleur and an indexed barrel provides for quick and easy cable adjustment Speeds: 10 speed road shifter/10 speed mountain rear derailleur (11 speed Shimano mountain derailleurs may be used with only a slight decrease in shifting performance) CNC machined Precision stainless steel hardware Sealed cartridge pulley bearing Designed to be used with Shimano 10-speed Dynasys rear derailleurs and most Shimano 10-speed road shifters Not compatible with Tiagra 4700 Made in the U.S.A