EXCELLENT SEALING, NO LEAKAGE: The sealing ring made of eco-friendly silicone inside the jar lid makes the mason canning jar lids with good sealing performance,each jar sealing ring features small grooves design for tight and secure fit, not easy to slip or move around, tightly seal ensures airtightness and prevents leakage providing a hassle-free storageHIGH QUALITY AND FOOD GRADE MATERIAL : This canning lids made of premium material silicone seals which can be can with stand high and low temperatures, can be used in refrigerators, microwave ovens and dishwashers, it is not easy to rust , and the food-grade silicone ring can be in direct contact with foodUNIVERSAL SIZE, WIDE APPLICATION: These lids makes them perfect for all regular mouth mason jars including Ball and Kerr branded jars, come with good sealing and suitable for paired with most bottle, jar to store fruits, cookies, candies, salad, milk, smoothies, tea, coffee, screws or other small objectsWRITE A LABLING, ENJOY FRESHLY MADE FOOD: You can write the date and time of food preparation on the canning lids, enjoy the ability to customise each lid with a permanent marker. Simply write directly on the lid surface with a permanent marker so you can easily identify the contents of the jar, enjoy freshly made foods tonight or tomorrowSPLIT DESIGN : This jar canning lids can be applied in combination with stainless steel band , replace older, rusted lids and avoid the need for disposable lids by using these alternatives, keeping food, grains, dressings, drinks fresh, no need to worry about leakage that may contaminate the kitchen or other places after sealing food (Please note our products DO NOT INCLUDE CANNING BANDS)colour:SilverMaterial:tinplatesize:86mmPackage Contents:80 x Wide Mouth Canning Lids Only 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.