Sea Dog Deck and Baitwell Plug. The Baitwell Plug features a cam action for easy installation and leak proof seal for livewells and baitwells. Simply turn the handle clockwise to tighten the plug then snap down the handle to lock. Snap lock handle is adjustable to tighten plug size to fit most baitwells currently available. Constructed of durable stamped brass and nitrile rubber. 5/8" diameter X 11/16" long.