This Single Speed tensioner by Cyclingdeal is a product allowing single speed set up to be run on geared bikes without the expensive modification you had to do in the past. This chain tensioner mounts right onto your derailleur hanger to provide a simple, effective and adjustable way to tension a single speed system.
Fits single ( Chain width 3/32” only, NOT 1/8" ) and multi-speed chains. To avoid from chain drop, we reckon to use round and oval shape chains only
Material: aluminum alloy. 11T Plastic pulley. Weight: 144g. Adjustment tensioner and derailleur hanger included
Top quality. Made in Taiwan. One year warranty