This 2-pack of standard E-Hub™ Bases creates additional accessory mounting locations on pop-up shelter hubs or other flat surfaces. E-Hub accessories are designed with a locking clip connection that easily snaps into place, holding strong and secure even if accidentally bumped. Each base utilizes the existing bolts/nuts on the shelter hub, so no additional installation hardware is necessary when mounting to a hub, but this 2-pack also includes four self-tapping screws for use in other locations (such as mounting to a sled or inside of a wheelhouse). When the day is done, the base can remain mounted during shelter takedown and storage, ready for your next trip out on the hardwater. Each standard base is fully compatible with all mountable E-Hub™ System accessories.