Made of high quality, food grade and BPA free ABS, this jar sealer ensures no harmful substances are introduced into your stored food and is stain resistant. For mason type jars only. Our reusable mason jar lids are made of high-quality metal for excellent corrosion resistance in everyday use and withstand high and low temperatures. Refrigerator, microwave and dishwasher safe. Jar Seal Kit with accessory hose and Mason jar lid for vacuum sealing, creating an airtight vacuum seal on Mason jars to keep food fresh and prevent odor and moisture loss. Great for sauces, mustards, grains, nuts and jam storage and more. Comes with a manual portable vacuum pump that you can use to draw air out of a mason jar. Material: ABS, Metal Color: 4Pcs, 9Pcs(optional) Size: Air Pump: 14 x 4.5 x 0.8cm Bottle Opener: 9 x 1.8 x 1cm Large Sealer: 10.2 x 3.5cm (inner hole 0.6cm) Small Sealer: 8.5 x 4cm (inner hole 0.6cm) Large Mason Jar Lid: 8.9 x 1.6cm Small Mason Jar Lid: 7.4 x 1.5cm Weight: 190g, 310g Package List: 1 x 4Pcs/9Pcs Jar Sealer Kit