【SUPER VALUE PACK】- Our Thickened Mason jar lids set coming with 100 Pcs wide mouth canning lids fit ball and Kerr brand preserving jars, 100 kitchen stickers, 1 opener , 1 pen with 3 bands included.( the diameter of lid is 6.8cm/2.7inches, It is suitable for regular mouth mason jar.) 【PREMIUM TINPLATE CANNING LIDS】- These regular mouth canning lids are thicken about 6.0g per, rust resist lids and PVC Seals, tightly seal to keep food, grains, dressings, drinks fresh to the utmost extent. 【EASY TO USE & WASH】- The mason jar canning lids are easy to use for new canners, canning lids are easy to wash clean, BPA-free, Food Safe, Non-toxic and tasteless, can be used in refrigerators, microwave ovens and dishwashers. 【SAFETY BUCKLE】- Safety buckle on the canning lid, which you could judge if your canning sealing well.During the heat sealing process, the safety buckle will be raised; when cooled, Solid and concave means a good seal. and We come with a bottle opener to help you open the lids for mason jars quickly and safely. 【UNIQUE LABEL DEGINED】- Simply to mark food-related information on the lid, or write the date on the lid, which can help you record the time of food production and purchase. Also with 100 kitchen stickers to note, so you can easily identify the contents of the jar.