Premium Tinplate Material: Our canning lids are made of tinplate (not stainless steel), which can be reused many times, can withstand high and low temperatures, can be used in refrigerators, microwave ovens and dishwashers. Excellent Sealing Performance: The sealing ring inside the jar lid makes the canning jar lids have good sealing performance, airtight and leak-free, tightly seal ensures it's suitable for keeping food, grains, dressings, drinks fresh, no need to worry about leakage that may contaminate the kitchen or other places after sealing materials. 100 PCS Wide Mouth Canning Lids Set: Our product is only the 100 jar lids (the band is not included), each diameter size is 3.3 inches / 8.6cm, compatible with most ordinary wide-mouth jars, NOT compatible with other regular-mouth. Split Design: The band can be applied in combination with silicone fermenting lids and stainless steel sprouting lids, the screw thread on the bottle mouth can increase the friction force of hands, which facilitates the opening of the bottle.(Please note our products do not include canning bands) Wide Application: Suitable for sealing the canning jars that stored spices, sweets, , fruits, jams, soft drinks, tea or coffee, nails, screws, and other and can write the date, time on the lids. Colour: silver Material: tinplate Package Contents: 100 * Canning Lids (date version) 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.