The Drink Rail Adapter is compatible with all the Vista Aluminum level railing systems, this adapter kit allows you to add any deck board of your choice into a functional drink rail perfect for entertaining. The pre-drilled drink rail adapter attaches to the top rail with the included installation screws then fasten upward into your deck board to complete the install. The 100% aluminum adapter can easily be cut to fit your needs, it has been designed to be installed over the top of the posts and brackets for a continuous profile.