ZTTO MTB Road Bike Single Speed Derailleur Bicycle Chain Tensioner

Material: Aluminium Alloy
Length: 90mm/3.5 inch

Weight:About 63g

Extremely lightweight
Designed to provide a simple, effective and adjustable way to tension a single speed system
Converts any multi-speed bike to a single speed for hanger dropout frame
Works for 13-23T cog chain mountain bikes; Easy to install and convenient to use
Floating pulley adjust wheel for perfect chain tension