Fermentation Kit: Begin making tasty, healthy kimchi, ginger carrots, Hot Sauce, sauerkraut, pickles and other fermented foods with ease and safety.<br> Canning Jar Lids: With a great sleek silver color they are perfect for that modern look that you want in your pantry. Makes an excellent gift for the fermentation expert in your life.<br> Wide Mouth Mason Jar Lids: gaskets create a tight seal between the lid and the jar, preventing water, oxygen and dust from contaminating your ferments.<br> Canning Lids Fits Any Wide Mouth Jar: Can be used for Bernardin, Kerr, Ball. Any brand of "Wide Mouth" Mason jar in pint, quart, or half-gallon.<br> colour:Silver<br> material:Plastic + Aluminum<br> size: Approximately 86mm in diameter<br> Package Contents:<br> 4 x Mason jar fermentation lid<br> Only the above package content, other products are not included.<br> Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.