Enter your 1-GPS-ORMCMK-V104 number</br>Above to make sure this fits</br>Included are two sets of o-rings (two diameters), Plus a backup O-ring in each size, a rubber shim and an x-lock composite mounting bracket</br>The rubber shim supports the x-lock mount which is engineered to attach at any 9 degree Angle and still allow the computer to be mounted forward</br>The x-lock securely fastens the GPS computer to the mount by pressing down at a 45 degree Angle and rotating it forward until it "locks" into place</br></br>Product Description</br></br>Lezyne GPS bar/stem mount kit each GPS unit comes with a standard GPS mount. Included are two sets of O-rings (two diameters), plus a backup O-ring in each size, a rubber shim and an x-lock composite mounting bracket. The rubber shim supports the x-lock mount which is engineered to attach at any angle and still allow the computer to be mounted forward. The two super durable O-rings secure it to the bar, and the patent-pending x-lock design will prevent the computer from being knocked out. The x-lock securely fastens the GPS computer to the mount by pressing down at a angle and rotating it forward until it locks into place.</br><br/>http://www.amazon.com/gp/product/B00WKSTC4A