- Add-large spheroid pull fillister.
- Round ball underwater signaling device.
- Underwater signaling device that fits easily on any cylinder.
- Simple to use underwater signaling device.
- Includes rubber band and ball.
- One pull and let go..it's that easy to put on tank.
Get the attention of your buddy, your students, or other divers from long or short distances. Made from
black marine grade bungee. This tank banger will not deteriorate or break like the ones made from surgical tubing.