*PAUL* melvin chain tensioner (silver)

The Melvin Chain Tensioner from America's high performance bicycle component manufacturer, Paul Components.

You can convert your geared bike into a single speed...with style!

Simply install these onto the derailleur hanger.

Tough springs will give a nice tension to the chains. You wouldn't have to worry about the chains falling off.

The bearings on the pulley is nice and smooth.