Size: outside diameter: 70 mm, suitable for general mouth and mouth Mason cans and other 70 mm opening size cans. Material: Mouth mason jar lids made of polypropylene; BPA-free, chemical-free, durable, safe, anti-rust. Packaging: 8 pieces of mason jar lids can lids in 8 colors, including bright red, yellow, sky blue, sapphire blue, white, orange, green and pink, very suitable for color-coded preservation, adding interesting and vivid colors to the family. Advantages: daily use of metal cans that no longer rust; can be safely cleaned in the dishwasher, easy to clean, non-stick to food or bacteria. A wide range of uses: suitable for storing all kinds of articles, not only fruits, jams, biscuits and colorful candies, but also soda, tea, coffee, nails, screws and other small things