Features:_x000D_1. Made of high mass materials, it has exquisite workmanship._x000D_2. It is practical and wear resistant._x000D_3. Speed: 6speed/ 7speed_x000D_4. Equipped with a 11T guide wheel_x000D_5. professional accessories for mountain bikes, practical and wearable._x000D_6. rear derailleur features smooth and crisp shifting at all times._x000D_7. Easy to install and Easy to disassemble_x000D_Color: Black_x000D_Cage: long_x000D_Total capacity: 34t_x000D_Maximum sprocket: 28t_x000D_Minimum sprocket: 14t_x000D_Front sprocket tooth difference: 20t_x000D_Compatible mounting type: direct mounting and hub Screw mounting (suspended mounting)_x000D_weight:252g_x000D_category:Rear shifting and Eye shifting_x000D_Notice:_x000D_Please confirm the model you need before purchasing._x000D_includes:1XRear Derailleur