Features: 1.Safe and durable: This tool kit is made of safe and durable materials. 2.Vacuum Seal Keeps Food Fresh: The jar seal kit with accessory hose and Mason jar lid, for vacuum sealers, creates an airtight vacuum seal on Mason type jars to keep food fresh and prevent off-flavors and moisture loss. Great for sauces, mustards, grains, nuts and jams storage, etc. 3.Manual Portable Vacuum Pump: We provide you with a manual pump that you can use to draw air out of your Mason jars.Is the Vacuum Sealer too big to take with you on a trip or picnic? You can also replace it with this hand pump. 4.Environmentally friendly: High-quality, food-grade and BPA-free silicone sealer ensures that no harmful substances are introduced into your stored food, and is stain resistant. Only available for Mason type jars. Made of high quality tinplate, our reusable Mason jar lids have excellent corrosion resistance in daily use and can withstand both high and low temperatures. Refrigerator, microwave and dishwasher safe. 5.After-sales service: If you have any problem, please contact us immediately, we will help you solve it as soon as possible. Specifications: Size:as shown in picture Material:ABS+Silicone includes: 1 Set of Sealer