Compatibility Excellence: Pour Spout Lids are designed for a seamless fit for with all WIDE MOUTH Mason jars. Its universal compatibility includes popular brands like for Ball, Mason, etc, catering to jars with a diameter of 8.7cm/3.4 inch. Experience impeccable fitting and function for your everyday jar usage needs. Evolutionary Design: Unchain your Mason jars from its traditional usage. With for FyndraX flip cap pour spout Mason Jar Lids, transform your Mason jars into an easy-to-pour pitcher for liquids. It's a revolution in a lid, adding versatility and convenience to for your Mason jar experience. Airtight Sealing: for FyndraX Mason jar lids ensure an impressively strong airtight seal. The flip cap screw lid design extends the shelf life and maintains the fresh flavour of your salad, dressings, juices and more. Give your stored items the ultimate protection they deserve. Quality Construction: Our Mason jar lids are constructed from reusable, food-grade plastic. They are free from BPA, assuring longevity and cleanliness. Easy to clean with its dishwasher safe feature, making them a hygienic choice. Plus, they are safe for storage in refrigerators. User-Friendly Design: These lids feature a handy pouring spout and an easy-to-grip anti-slip design, ensuring easy and efficient pouring. The flip cover lid has an excellent leak-proof sealing to avoid spills and mess. Mason Jar Lids make everyday pouring and serving a breeze. Material: plastic colour: Black Package Contents: 4 x bottle cap Only the above package content, other products are not included. Note: Light reflection 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.