Goatlinks are designed to optimize the derailleur's position relative to your cassette. Offered in two versions - a 10-speed and 11-speed, each is intended to improve the shifting of your 1x drivetrain.Improves chain wrap and reduces premature shifting degradation by replacing the Direct Mount link from compatible Shimano ten-speed rear derailleursCompatible with 2013 or later Shimano 10-speed Shadow Plus rear derailleurs that use the 8mm Direct Mount intermediate link whose link is 7.9 - 8.1mm thickDoes not work with direct mount native frames or SRAM rear derailleursThe fastest route to improved wear and long-term shifting performance on wide-range 1x10 drivetrains that utilize Shimano Shadow Plus derailleursStainless Steel mounting hardware included8-10NM tightening torque Wolf Tooth GoatLink Rear Derailleur Adaptor Miscellaneous Rear Derailleur Part UPC: 812719021371