"High Quality Material: Made of high quality plastic, the floating box is non-toxic and harmless. It does not harm human health and can be used safely. Floating easily : The pool chlorine diffuser can easily float on the surface of the pool so that the chlorine is distributed evenly, without worrying about the chlorine levels in your pool. The pool chlorine floater has a locking cover that keeps the chemical tablets in place. safely inside. Easy to use: Just open the lid and slowly add chlorine tablets, and put it into the pool after adjusting the outlet. Tablets 1 inch chlorine can be placed directly and 3 inch ones should be crushed in advance. Adjustable flow port: The dispenser is designed with ports on the side to control the amount of chemicals that flow escape from the distributor. You can adjust it according to the dosage you need. Wide use: l can keep the pool water clean and healthy. The floating chlorine dispenser creates a clean and hygienic environment for family or guests, so everyone can rest assured in the water. Works well for in-ground pools, massage tubs, spas, above ground pools, ponds etc. This dispenser is suitable for in-ground pools, massage tubs, hot tubs, above ground pools and spas." Sold by the grid cool store