?NSF Certified Material?NSF certified natural coconut shell activated carbon can remove Chlorine, odor, color, VOC, THM's to provide you with healthy and pure water. ?Multiple Uses?The filter fits any standard 3/4" garden hose thread. Filling above ground pools, kiddie pools, spas, hot tubs, and ponds, outdoor pet baths, spot-free car washes, watering gardens & more. ?Long Service Time?Active carbon garden hose pre-filter Filters up to 8,000 gallons, and makes hard water soft by removing minerals, heavy metals and sediment from it. ?Easy to Use?Simply attach the hose to the pre-filter and turn it on. Allow water to flow for 30 seconds before placing the hose in your pool or spa to fill it. ?Six-Months Return Policy Guaranteed! ?Product Life Time Warranty on Every Filter Confirmed With Defects in Material and Workmanship Within Each Filter's Service Life. We promise a risk-free shopping experience backed up with our reliable Quality Control, Customer Service and Technical Support Team which is located to Los Angeles.