Specifications:

• Well-Pro Chlorine Pellets Case of 9: 3.5 lb Jars (plastic) Containers. calcium hypochlorite.
• High quality chlorine pellets (calcium hypochlorite) are listed NSF Standard 60 and are USDA Food Grade.
• These 0.79 gram pellets are specifically designed for use in the WellPro Chlorinator and for general well sanitizing.
• Not for use in Landomatic or Sentry pellet feeders, which use the 3/8" size pellets, see our item code C2000140 Chlorine Pellets Sentry.
• NOTE: cannot be shipped back, store returns only.