How to use a jar sealerStep 1: quickly rinse and dry the preserves jar to make sure it is clean and ready to sealStep 2: place the food in the preserve jar, fill the preserves jar, at least 1 inch from the side of the jarStep 3: place the preserves jar lid on the top of the jarStep 4: place the jar sealer on the lid and press down firmly, to snap it into place. Make sure your sealant can completely cover the entire edge of the preserves jarStep 5: insert the hose into the top of the sealed jar. Make sure your accessory hose is connected to the vacuum sealer and ready to seal Parameter:Product Name: Universal Vacuum Sealer MachineProduct Weight: Large 162g Small 106gPackage Size: 11*11*8Package Weight: 300g Product Material: SiliconeProduct Size: Small 8.5*8.5*6cm/ 3.34*3.34*2, 36inLarge 10.5*10.5*6cm/4.13*4.13*2.36in List:Pair of Universal Vacuum Sealer