The Sauer Stones 4 Clear Glass Wide Mouth Mason Jar Fermentation Weights Set includes four glass weights designed specifically for wide mouth jars. These reusable weights are perfect for fermenting foods and canning supplies, with a sleek clear color and easy-to-clean design. Each weight measures .5 inch in height and 2.5 inches in width, providing a secure fit for your mason jars during the fermentation process. Made by the brand Sauer Stones, these fermentation weights are a practical and essential addition to any home kitchen.