Introducing the Otoli System for your deck.  If you have a deck railing, then odds are VERY GOOD that the Otoli System was designed for your deck.  Otoli attaches directly to the spindles of your railing and fits any thickness of spindles from 1/2" to 1 1/2" - round or square. wood or metal, creating a stable and strong rail to hold accessories like planter rings, planter box brackets, shelves and hooks to hang plant baskets or tools.