The Silly Billy Safety Bung self seals and self drains.
You never take it out of the boat so you never lose it, and if you forget to tighten it up it will seal itself.
The Silly Billy Safety Bung is the only self sealing self draining safety bung in the world.
Doesn’t your family deserve a Silly Billy Safety Bung right now?
Comes complete with bung, housing & screws