Check the listing for details. Octopus Holder with Split Ring. Condition: New. Listed at 4.95 USD. Brightly colored for easy identification in an emergency, this Octopus Holder with 1" (2.5cm) Stainless Steel Split Ring attachment will retain your alternate air source (octopus' regulator) were you attach it to your equipment until you need it. Won't allow octopus to drag along the bottom collecting sand or destroying the reef, Octopus holder also helps prevent free-flow from accruing when entering the water or when encountering a current. Octopus holder can protect your regulator mouthpiece when you stow your equipment after diving. Holder is available in multiple colors.