Small Glass Jars with Locking Cannister Style Lids - 3"x2"x2" ~LOT of 6 Jars (6) Lot of 6 Small Glass Mason Type Jars 3 Inches High x 2 Inch Square Jars have locking lids and rubber gasket seals. These are great for decorating with paints, making mini candles, wedding favors and more! These jars hold approximately 3 oz. The opening (mouth of jar) is 1-3/8" in diameter.