: For certain items sold by Walmart on Walmart.com, the displayed country of origin information may not be accurate or consistent with manufacturer information. For updated, accurate country of origin data, it is recommended that you rely on product packaging or manufacturer information. The FoodSaver Wide-Mouth Jar Sealer fits on your own Ball and Kerr Mason jars and works with FoodSaver vacuum sealer systems to keep goods fresh longer. It is ideal for liquids, fragile foods and dry goods like brown sugar, spices, dried fruit and coconut. The mason jar sealers replace standard Mason-type jar lids to create a vacuum seal that locks out air – the enemy of freshness. It is not to be used for canning. It is simple to use by connecting one end of the jar sealer to the machine’s accessory port and the white, round-shaped end to the top of a lidded Mason jar, so that it fits securely over the screwed-on lid. It works well for safely storing strawberry and blackberry jams, chocolate sauces, hot mustard, and other liquids and fragile foods. Re-seal those handy food-storage jars again and again using this FoodSaver Wide-Mouth Jar Sealer.