< div > < p > weight: approximately 18 g
Packing list: 1 x rear derailleur extension tail hook+1 x screw
Material: aluminum alloy
Type of project: rear derailleur extension tail hook
Optional color: black, red
Purpose: extended rear watt chainer for 40t/42t/46t/50t/56t mountain flywheel or 32t/36t/42t road flywheel to make the longer flywheel shifter smoother