【Suitable for two types of Mason jars】The electric Mason jar vacuum sealer contains two sizes of mouth seals for your daily use. To get the standard mouth seal jar, simply insert the red arrow on the standard mouth seal converter, align it with the unlock symbol on the main unit and then insert it inside the silicone ring in the wide mouth seal area and tighten it clockwise, at this point the arrow is aligned with the lock symbol, which indicates a successful installation. | 【For all your vacuum sealing needs】Includes an electric vacuum sealer containing a wide mouth sealer, a standard mouth seal converter, 5* wide mouth Mason jar lids, and 5* regular mouth Mason jar lids and user guide. Our food vacuum sealer kit will help you remove the air from your Mason jars and extend the life of your stored food. | 【Electric vacuum pump, free your hands】No longer need to use both hands to press the manual vacuum pump ten or twenty times, no longer need to take out a bunch of accessories hose, take out a vacuum machine, so that your desktop clutter, you use our electric vacuum pump, just press the button once, wait 40 seconds or more, you can complete the vacuum seal. | 【Easy to use】The cordless vacuum sealer with standard mouth sealer converter kit is suitable for wide-mouth and regular-mouth mason jars (mason jars not included). Make sure the electric vacuum sealer is centered and pressed firmly against the lid of the jar, click the button to start the vacuum pump and wait about 40 seconds or more and the air can be evacuated to the seal. Clicking the button again closes the sealer. | 【Portable vacuum sealer】Don't have a vacuum sealer? Don't worry!!! We offer you an electric Mason jar sealer that you can use to extract the air from your Mason jars. The sealer is too big to carry with you when you travel or have a picnic? You can also use this electric sealer instead of it.