This Sprouting Jar Lids is made of stainless steel.They are perfect for making organic sprout in your house or kitchen.The product includes 2 lids, so you can grow a variety of sprouts and keep a constant supply on hand. Features - Color: Silver. - Material: Stainless Steel. - Size: 9 x 9 x 1.5 cm/3.54 x 3.54 x 0.59 inch. - Stainless steel sprouting jar lid for wide mouth mason jars. Perfect for making organic sprout in your house or kitchen. - Simple and safe to use with no edges, your mason jar sprouting lids are easy to screw on and they don't need to be removed to rinse or drain your seeds. - A perfect size fairly fine-mesh screen allows easy draining and empty the water from the mason jars but no loss of seeds. - Grow your own organic broccoli sprouts, lentil spouts, bean sprouts and fine enough to use for even tiny sprout including alfalfa with these sprouting lids. - Perfect for sifting, soaking and straining or doubled up to strain smaller or loose leaf tea.