If you are riding around without one of these (provided you run 9 spd gear) in your toolkit and a chainbreaker you should make sure you have a taxi fare in toolkit!. Inevitably at some point (esp on MTB) chain will have an issue. These will get your out of trouble! Easy to install, take up llittle space, better than a quicklink IMHO
Diff colour to the 10 spd versions so you can't get the confused in your home toolkit!
(Posted on 21/04/2011)