Masontops Wide-Mouth Tough Top Canning Jar Lid (4-Count) MagnaFlex 4 mil (thousandth of an

4 mil (thousandth of an inch) film and 18 mil cross scrim

• Porcelain-enameled steel construction

The disc's advanced laser melting process provides a long-lasting and durable carbide edge bond for increased durability and long cutting life

1/4" slotted

Fits flush with floor

Masontops Wide-Mouth Tough Top Canning Jar Lid (4-Count) MagnaFlex 4 mil (thousandth of anTough Top lid turns any mason jar into an air tight storage container. The underside of each durable, food safe plastic lid has a custom gasket channel which holds the BPA free silicone gasket in place at all times. 100% leak proof. Dishwasher and freezer safe. Tough Tops are NOT intended for Canning. Do not heat or boil.