Description:

Made of plastic material, corrosion proof, ultralight but high strength
Designed to provide a simple, effective and adjustable way to tension chain and speed change
Converts any speed bike to a single/2/3/6 speed for hanger dropout frame
Rear Derailleur Mount, Dual wheel guide wheels and built-in spring keeps chain stable and never dropping
Compatible with BROMPTON Folding Bikes

Specification:

Material: Plastic
Size: 18x13x6cm/7.1x5.1x2.4 inch

Package Includes:

1 Piece Bike Chain Guide Tensioner