Upside-Down Wide-Mouth Vented & Plugged Jar Lids (Set of 6)

This set of six wide-mouth jar lids is perfect to get started or replenish your grain spawn and liquid culture jars. The lids come with a 1/4" (6mm) vent hole (designed to be covered with micropore tape) and a rubber injection port installed. Includes six lids and rings.

These lids are designed to be installed on jars upside-down (white side out). Some folks prefer this orientation because the lids are easier to remove from the jars after pressure cooking.