Plastic Polypropylene Straining / Sprouting 3 Pc Lid Set (Regular-Mouth) Lid size: Regular Mouth: diameter = approx. 2.75 inches. Compatible with regular mouth lid canning jars. Mesh size: Fine, Regular and Large. Fine is finer than any other straining lids out there, making it excellent for use with all of our cultures, our preferred size when straining for clarity or creaminess. For sprouting this is particularly good for small beans. Regular is great for quick straining and/or handling larger cultures (like big milk grains or kombucha scobies). May not be suitable for some ginger beer plant. For sprouting this is the most versatile size - great for almost all size beans. Large is our most open weave, suited for quickest straining of large cultures (like big milk grains or kombucha scobies. Not suitable for ginger beer plant. For sprouting this is ideal for medium and large beans, chaffing off hulls and increasing breathability. Material: 100% Polypropylene