Description:

Made of aluminum alloy material, corrosion proof, ultralight but high strength
To provide a simple, effective and adjustable way to tension chain and speed change
for single speed to 6 speed, for hanger dropout frame
Rear Derailleur Mount, Dual wheel guide wheels and built-in spring keeps chain stable and never dropping
Fit for BROMPTON Folding Bikes, asy to install and use.

Specification:

Material: Aluminum Alloy
Size: 16.5x6cm/6.50x2.36 inch

Package Includes:

1 Piece Bike Chain Guide Tensioner