2PK - TRRWC02 Reusable No-Splash Cap for 48mm Screw Top/Snap on Crown Top (Needs to Remove Inside White Ring) 3 & 5 Gallon Bottles and Water dispensers with Probes Silicon, polypropylene, BPA free Does not fit onto glass bottles Dishwasher safe In order to keep the cap sanitary, it is important to clean it regularly US Patent Pending Fits <span class="a-text-bold"><span class="a-text-italic">Snap-on &amp; most Crown-top</span></span> (Must Remove inner ring) Does Not Fit onto glass bottles Lets a minimal amount of water leak from the bottle when tiltitng in into place For use with <span class="a-text-bold">crown-top</span> finish bottles, peel one of both sides to release the<span class="a-text-bold"> inner ring</span> Proceed to remove the ring by angling it slightly over the piece of the <span class="a-text-bold">plastic valve</span> that is protuding One removed, you are now ready to use this cap with a<span class="a-text-bold"> crown-top</span> bottle For <span class="a-text-bold">screw-top finish </span>bottles, simply replace the ring by pressing firmly on each side and screwing it onto the top of your bottle Once you have adjusted the cap accordingly and fit it onto your bottle, you are now ready to tilt dispenser with <span class="a-text-bold">probes</span>