Durable, stainless steel sprouting screen for use with Mason jars. The sprout screen is 83mm (3. 25″) in diameter and fits all “wide-mouth” Mason jars. Excellent for growing small batches (1-4 Tbsps at a time) of sprouting seeds. The screen allows for easy rinsing and air movement. In just 3-6 days, when sprouts are mature, simply replace with the original jar lid, and refrigerate.