Protect your food with a vacuum environment that preserves flavor, nutrients, and freshness while blocking moisture and unwanted tastes. Ideal for homemade jams and sauces, as well as marinating meats, making it a reliable tool for any home chef. Compatible with two mason jar mouth sizes: BPA, safe for consumption, and does not affect the taste of food. Dishwasher safe. Includes two mouth seal sizes (68 mm regular mouth and 84 mm wide mouth) to effortlessly seal jars of different sizes. Complete jar sealing solution: Electric vacuum sealing machine that covers both wide mouth and standard sealing needs. The set includes 5 wide mouth caps, 5 standard mouth caps, and 1 USB cable for convenient charging or power supply. Hands, onehanded operation: Eliminate manual pumping and bulky accessories. Seal Mason jars with one hand while keeping the other hand to steady the jar. Practical use scenarios: Preserve homemade jams, sauces, marinades, and other perishables for longer fridge or pantry shelf life. Seal dry goods such as nuts, coffee, or dried fruits to extend freshness and protect against moisture or pests. Prep and store marinated meats or flavorinfused liquids in jars, enabling easy batch processing and quicker meal preparation. Key attributes at a glance: vacuum sealing prevents air exposure, dualmouth compatibility (68 mm and 84 mm), BPA materials, foodsafe design, dishwashersafe components, and a compact electric unit that includes both wide and standard sealing capabilities with a USB power option.