This item is a set of 20 pcs water jug caps, made of plastic material. It is applicable to 18.9 litres of water bucket. Inner caps design turn the non-spill caps into reusable and replacement. Sealing strong ensures sterile environment and protection against spillage. Refill your water jug for recycling use and saving your money. Suitable for water dispenser, water cooler, the center button stays attached to the once it's placed, instead of floating around in the water; also for water jug on rack or with water pump in both family and office. Features - Color: Blue.- Material: Plastic.- Size: About 5.5x5.5x3.6cm.- Water bottle snap on cap: fit for 18.9 litres of water bucket/bottle.- Reusable water jug cap: made of durable plastic, with inner caps design, replacement use for several times, say no to lots of disposable water caps and reduce waste.- Non spill cap: blue loop and white inner lids for anti-splash and no leak; Outer dust-proof protection for anti-bacteria and clean drinking water.- Fit for use in: suitable for most water and beverage containers, water dispenser, and more; Also fit for water bottles on rack or with water bump in home and offices.- Notice: suitable for snap bottles, not for use with screw bottles.Packing list: 20 x water jug caps