Specifications: Material: PP Color: Blue & White Size: 27*16*9cm / 10.6*6.3*3.5" Inside Dia: 10.5cm / 4.1" Package Included: 1* Chlorine Tablet Dispenser 1 box of effervescent tablets 1 box of ph test paper Notes: --Due to the difference between different monitors, the picture may not reflect the actual color of the product. --Please leaving a message before you give the bad feedback, if the products have some problems. --Please allow 1-3mm error due to manual measurement. --Thanks for your understanding. Chlorine Tablet Compatibility: Designed for use with chlorine tablet tabs for effective chemical distribution in your pool or spa Peace of Mind: Eliminates the worry of maintaining proper chlorine levels, providing ease of use for pool owners Durable Construction: Heavy-duty build ensures long-lasting performance and reliability Versatile Use: Compatible with in-ground pools, above-ground pools, and spas Adjustable Output: Features an adjustable chlorine output vent for customizable chlorine release based on your needs