5 Gallon Bottle Cap: This water bottle cap fits 55mm or 5 gallon water bottles.Kettle Lid: The jug lid buckle will not splash, leak, overflow, tightly sealed, clean and durable; it has a dustproof external protective splash guard. Soft and stretchy for multiple uses and preservation; for 3 or 5 gallon 55mm replacement water bottle caps, fits standard "snap", not screw cap bottles.Widely used: suitable for sealing of drinking spouts and bottled water. The center button has the latest design and is placed on the lid instead of floating in the bucket; it also works with water bottles on a shelf or pumps in your home and office.[Splash-Proof Design]Blue ring and white inner cover are splash-proof, leak-proof exterior dust protection stickers that keep drinking water clean. Reusable, unique inner cover design, multiple replacement and use, reject a large number of disposable water cover, reduce waste.Fits 18.9 liter water bottles.size:about 5.5x3.7cmMaterial:plasticPackage Contents:20 x Water Jug CapOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.