Bicycle Derailleur Bicycle Finger Dial Bicycle Transmission Finger Dial Transmission Accessories High Hardness Black Shift Lever Specification Name: Split finger transmission Colour: Black Weight: about 265 grams (with variable speed core) Material: Aluminum alloy body resin upper cover Product features: Visual window variable speed hands can fine-tune the speed change, suitable for the installation of line disc variable speed and oil disc variable speed Include: 1*transmission Specifications: -100% high quality high quality -Visualized window speed change can be fine-tuned with both hands, suitable for line disc speed and oil disc speed installation -Single-chain variable speed bicycles are used, and multi-chain variable speed bicycles are not supported -Aluminum alloy body resin upper cover, high hardness, quality and guarantee 1*transmission