ef51 one-piece finger brake change integrated 21 speed 24 speed 7 speed 8 geared bicycle mountain bike speed controller accessories ef51连体指拨闸变一体21速24速7速8变速车山地车变速调速器配件

Crate Size: 47*38*27CMA box of 50 pairs"Product Name": Shifting Handle/Brake Lever
【Model】: 51-7 21-speed, suitable for front 3-tooth and rear 7-spoke freewheel, 21-speed positioning shifting system
Suitable for: Mountain bikes/city leisure bikes/folding bikes/straight handlebar road bikes
Specification: 22.2mm bore (21-23mm are both acceptable)
7/8 speed
the position of the thumbwheel and the trigger-style handle,
Make gear shifting easy, divide tasks vertically, move forward and backward freely, and visualize gear position display.
Gear changes are clearly visible
51-7 tandem dial
【Instructions】: Suitable for the first three gears and the seventh speed, the transmission system is equipped with a transmission line.
A box of 50 pieces bubble bag packaging
Physical with labels