Jars SET INCLUDES: 20 glass mason jars, 20 metal separable airtight lids, 20 colorful lids with silicone sealing rings, 24 writable stickers and a white marker. Each jar is 4 inches in height, 2 3/4 inches in mouth’s width, and 8oz (237ml) in capacity.PREMIUM GLASS AND AIRTIGHT LIDS: The jars are made of superior food-grade glass, healthy, lead-free and dishwasher safe. The metal lid is lined with a BPA-free sealable plastisol. The colorful plastic lids can be used with or without the leak-proof silicone ring. The blank label stickers can be written in white (chalk marks included), which gives you the option of placing labels on the side of the jar or on the lid.VISIBLE, SEALABLE, CLASSIFIABLE DESIGN: High transparency glass designs to be really visible to see what’s inside when piled up with many jars. The split metal cover is specially designed for fermentation with excellent airtightness. Plastic lids come with silicone rings for enhanced tightness are available in four colors for better classification or you can directly mark the categories on the label.CAN STORE WITH MANY KINDS: The proper capacity and wide opening of the jar is ideal for storing diverse of fruits and vegetables or any other stuff you may want to place in it like homemade pickles, tomatoes, sauerkraut, salmon, smoked mackerel and pumpkins, also great for grains, candy, jam, kidney beans, olive, peppers, fusilli, gravy and preserves, etc.MULTIPURPOSE IN MANY OCCASIONS: It has many uses in fermentation, canning and storage in everyday homes and kitchens, and also for placing some ready-to-eat foods that need to be opened frequently, even can be used for dry or liquid storage in restaurant and warehouse freezers and refrigerators, very versatile and essential.