Feature: 1. Swimming pool floating chemical dispenser for 1 inch chlorine tablets. 2. No more worrying about the chlorine content in the swimming pool or spa. 3. This dispenser is suitable for underground swimming pools, above-ground swimming pools and spas, and is equipped with adjustable chlorine gas outlets, which can be adjusted according to your preferences. Specification: size: about 42 x 36mm Material: pvc colour: blue Package Contents: 1 x Pool water filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.