1. Electric vacuum pump, your hands: You no longer need to use both hands to press the manual vacuum pump ten or twenty times, nor do you need to take out a pile of accessory hoses and a vacuum machine, making your desk messy. Use our electric vacuum pump. Just press the button once and wait 40 seconds or more, and you can use the vacuum seal. 2. vacuum sealer: Don't have a vacuum sealer? Don't worry!!! We you an electric Mason glass sealer that can be used to extract the air from your Mason jars. Is the sealant too big to carry when traveling or having a picnic? You can also use this Mason wireless glass sealer instead. 3. For all your vacuum sealing needs: Includes an electric vacuum sealing device with a wide neck sealer, a standard mouth sealing converter, 5 x wide mouth lids for mason jars and 5 x normal mouth lids for mason jars and an instruction manual (English language not guaranteed). With our vacuum sealer food set, you can remove the air from your mason jars and extend the life of your stored food. 4. Easy to use: The food vacuum sealer with standard mouth sealing converter kit is suitable for mason jars with wide mouth and normal mouth (Mason jars not included). Make sure the electric vacuum sealer is centred and pressed firmly against the lid of the jar. Click the button to start the vacuum pump for 40s or more, and the air can be evacuated to seal. Clicking the button again will close the device.