TERAPUMP TRDNC100 REUSABLE NO-SPLASH CAP for 5 Gallon Water Bottle and Water Dispensers WITHOUT probe Includes 1 Genuine TERAPUMP (TM) REUSABLE NO-SPLASH Drinking Water Bottle Cap + 1 Extension to use with Ceramic Dispensers Fits standard snap top water bottles (NOT for screw top finishing Bottle) Fits standard snap top water 55mm 2,3,5 and 6 Gallon bottles Designed for dispensers WITHOUT probes or prongs and also works with ceramic dispensers. Automatically release water when you turn over water bottle onto water dispenser Dishwasher safe , Material : Silicone only