A clockwise turn of the T-handle locks the plug in place; turn counterclockwise to release. Available in brass or stainless steel, with or without chain.
This Attwood Snap-Handle Drain Plug easily and reliably plugs drains on board. Simply insert the Drain Plug into a 1-inch-diameter drain opening and turn the handle clockwise to tighten it in place. Snap the handle to lock the plug in place.