1. Upgraded 4in1 Sealing ModesThe upgraded mason jar vacuum sealer is suitable for vacuum bags, wine bottles, mason jar lids with wide and normal opening, and vacuum container food seal. It can help remove the air from your mason jars and extend the life of the stored food. 2. Mason jar sealer vacuum kit: Our updated Mason jar vacuum sealer has an integrated design with small and large silicone sealing rings. Compared to other products, when using wide and regular mouth mason jar lids for sealing, our machine doesn't need to disassemble a seal adapter. The seals don't loosen as easily as other old models. 3. Easy to use vacuum sealer: The vacuum sealer for glasses has an automatic stop function under all sealing modes. With a simple press of the start button, it can achieve a perfect, fast seal within 20 seconds. The sealer stops automatically to completely extract the air. This mason jar vacuum sealer is equipped with a large builtin LED indicator to show the battery status and operating time. 4. Vacuum sealer for mason jars: The electric mason jar vacuum sealing set includes a mason jar vacuum sealer device, 5 x wide mouth canning lids, 5 x normal canning lids, 1 x jar opener, 1 x external vacuum sealing converter, 1 x retractable air suction hose, 2 x wine vacuum seal, 10 x vacuum bags (5 x small size 5 x large size), 12 x label stickers, 1 x Type C cable, 1 x User Manual. Start preserving the freshness of your food today with our upgraded canning jar seal kit.