Eachine1 2x 18 And 21 Speed Mountain Bike Bicycle Transmission Split Dip

One Pair Of 18 Speed 21 Speed Mountain Bike Bicycle Transmission Split Dip Specifications: Color: Black Model: 18 speed,21speed Material: Plastic + metal Size: 5*9*2 Installation aperture: 22.2mm Features: Suitable for MTB / city car / recreational vehicle / road car / folding Shift line is usually made of metal alloys softness. Standard configuration is the product has own speed steel wire core, radio tubes 18-speed and 21-speed, left and right 6 3 18-speed, left and right 7 3 21-speed, left are fine-tuning Package includes: 1 x a pair of bicycle transmission