`- Shimano derailleur adapter conceived by Lindarets, made by Wolf Tooth Components\n- Improves long-term shifting performance on wide-range one-by-ten drivetrains\n- Increases chain wrap (69% for 40t, 53% for 42t), eliminates the need to drastically thread in the b-tension screw\n- Replaces the Direct Mount link on 2013 or later Shimano 10-speed Shadow+ rear derailleurs to increase chain wrap and reduce premature shifting degradation\n- Fits derailleurs with 8mm Direct Mount intermediate link that mounts to standard derailleur hangers. Direct Mount-native frames, SRAM rear derailleurs are not supported. Results may vary\n- Installs in moments with little more than a 5mm Allen wrench \n- 19g