Akio Mason Jar (Wide Mouth) Cold Brew Maker and Infused Tea Maker (Stainless Steel Filter) Reusable Food-grade stainless steel cold cold brew filter. Ideal for cold brew coffee, cold-infused tea, and fruit-infused water. Fits any wide mouth mason jars. (Ideal for 32 oz mason jar). Small mesh size (150 micron) makes this filter ideal even for finely ground coffee and tea. Suitable for both cold and hot temperature.