HIGH QUALITY MATERIAL - VIBRATITE Canning rings are made of tinplate, which can withstand high and low temperatures, can be used in refrigerators, microwave ovens and dishwashers. NO LEAKAGE -These canning jar rings has a small groove design, can be tightly fitted to the mouth of the bottle. Super seal ensures air tightness and prevents leakage, providing an easy storage solution. UNIVERSAL SIZE - With a diameter of 2.75 inches(70MM), these covers are ideal for all regular mouth mason cans, including ball and Kerr brands. 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. WIDELY APPLICATION - Can be used to store canned foods, fresh foods such as jam and dry goods, fruits and vegetables etc. Please confirm the size of canning jars before buying SUPER VALUE SET - Including 100pcs 70mm split-type mason jar rings (not canning lids and jars). VIBRATITE 100 Pieces Regular Mouth Canning Rings, 70MM Mason Jar Split-Type Metal Canning Bands for Ball, Kerr, Mason Canning Jar Rings, Reusable Leak Proof Replacement Rings