【Product Details】: ·LTWOO A2 7 Speed Rear Derailleur ·Rally ratio:2:1 Tech ·Compatible With Shimano ·Shadow RD with slant design ·Apply to:3x7s(32/34/36T) 1x7s(32/36/42T) ·LTWOO A3 8 Speed Rear Derailleur ·Rally ratio:2:1 Tech ·Compatible With Shimano ·Shadow RD with slant design ·Apply to:3x8s(32/34/36T) 1x8s(32/36/42T) ·LTWOO A5 9 Speed Rear Derailleur ·Rally ratio:2:1/1:1Tech ·Shadow RD with slant design ·Compatible With Shimano/SRAM ·Apply to:3x9s(36T/42T) 2x9s(36T/42T) 1x9s(42T/50T) ·LTWOO A7 10 Speed Rear Derailleur ·Shadow RD with slant design ·Big bearing pulley ·Compatible With Shimano ·Apply to:3x10s(36T/42T) 2x10s(36T/42T) 1x10s(42T/50T) ·LTWOO A9 11s Rear Derailleur ·Shadow RD with slant design ·Big bearing pulley ·Apply to:3x11s(Max:36T) 2x11s(Max:36T) 1x11s(Max:42T) ·LTWOO AX11/12 11/12 Speed Rear Derailleur ·Shadow RD with slant design ·Elite version ·Big bearing pulley ·Apply to:3x11/12s(Max:42T) 2x11/12s(Max:46T) 1x11/12s(Max:52T) ---------------------------------- 【Tips】: 1.About the color difference: the products are taken in kind, because the light angle, the display and other objective measures will cause a certain color difference, please understand 2.About size: Due to different shooting angles, it will cause certain visual errors. The product description has detailed size description. It is recommended that buyers purchase their own ruler when purchasing. 3.About damage: We solemnly admit that the parcel may be damaged during transportation. You can contact customer service staff to help you within 24 hours after receiving the product. Precautions: Dimensions are measured manually, please prevail in kind