Please kindly noted that this item is sold by jindouyunshanghai from Joybuy marketplace. Parts List: 4 x Mason Fermenting Lids Detailed description: Specification: Product Name: Jar Fermenting Lids Material: Plastic Size(Optional): 70mm, 86mm Note: 1. There may be slight differences between the picture and the actual color of the commodity. We will try our best to show you the exact color. 2. Please allow slight dimension difference due to manual measurement. [Airtight] The silicone gaskets create a tight seal between the lid and the jar. The clear lid ensures a tight seal and makes it easy to watch the fermentation process. [Multipurpose] Our jar fermenter caps facilitate you to make sauerkraut, kimchi, ginger carrots, pickles and other fermented foods easily and safely. This fermentation kit makes fermenting vegetables a breeze. [What You Get] The kit includes 4 sturdy, clear mason fermenting lids, 4 silicone gaskets, and 4 cord grommet, which are all BPA free. [Suitable for Wide Mouth or Narrow Mouth Jars] There are two optional size of caliber for you to choose, 70 mm and 86 mm, to meet your different needs of use. [Ideal Gift] This jar fermenting lids kit is the ideal gift for the person in your life who enjoys making fermented foods.