DCCH Rear Derailleur System Upgraded Version (support to 7 speed)

DCCH Rear Derailleur SystemThis system consists of 1) Shifter2)Derailleur 3)TensionerSupport: Pre 2021 Brompton, A line & C line.Does not support P or T Line.Price does not include Cassette, Cog or installation.There is no installation procedure.Buyer need to seek out their own bike mechanic to install. Can recommend bike mechanic if needed. It will support 2- 7 Speed.Cog support :11-28 TWeight : 177gm ( Derailuer + Tensioner)Do take note that the actual color of the item might varies from the picture.Color available:BlackSilver OrangeRedPinkBluePurple