Feature:1. Compatible for Only: Food grade silicone pump tubing should only be used for vacuum sealer.2. Vacuum Keeps Food Tasty: Jar kit with hose attachment and mason jar lid creates an airtight vacuum on jars to keep food tasty and prevent food stale and moisture loss. Great for storing sauces, mustards, grains, nuts and jams and more3. Portable Hand Vacuum Pump: We provide you with a hand pump that you can use to draw out of a mason jar. Is for vacuum sealer too big to take with you on a trip or picnic? It can also be replaced with this hand pump.4. Environmentally Friendly: Food grade, silicone sealant ensures no harmful substances are introduced into the food you store and is stain resistant. For mason type jars only.5. Corrosion Resistance: Our reusable jar lids are made of tinplate for excellent corrosion resistance in everyday use and withstand high and low temperatures. Refrigerator, microwave and dishwasher safe.Specification:Item Type: Jar Sealer for Vacuum SealerMaterial: Plastic, Silicone, Iron SheetColor: As Pictures ShownWeight: Approx. 315g / 11.1oz Package List:4 x Cover 2 x Suction Cover2 x Suction Head1 x Vacuum Pump1 x Tube1 x Bottle Opener