The Copperhead offers great value in a lockable short roof-line compatible, fork style mount. It's a less expensive alternative to the SteelHead. The Copperhead carries just about any bike with a quick release wheel skewer. However, there are a few exceptions where one of our other mounts should be used instead. These exceptions include, but are not limited to, bikes with nutted front wheels, triple clamp forks, forks with dropout spacing (the distance between the forks at the tips) other than 100mm, or disc brakes.