ZOF Aqua Floating Chemical Dispenser.
Suitable for 3″ to 4″ Chlorine & Bromine Tablets.
Remove the cap lid.
Place tablets inside.
put the cap lid back on the dispenser and turn to tighten.
Place the dispenser in your pool.
Your dispenser will float around your pool releasing the tablets as they dissolve.
Very simple to use, and very convenient.