The Light & Motion Vis 180 light offers a full 180 degrees of visibility -- none of which can do you any good without the right mount. Replace your lost or damaged Vis 180 mount with this Spare Mount, which includes the plastic backing for the light itself, along with the rubber strap for a secure fit around your seatpost. The Vis 180 Spare Mount comes in Black, and is designed to fit most any seatpost.