A high quality pour over coffee maker, the Austin G6 is built with refinement, and built to last. Material: Borosilicate glass carafe and stainless steel permanent coffee filter. Plastic protective grip. Capacity: 1 liter, 34 fl. oz. Simply use 20 grams for a 12 oz or 30 grams for an 18 oz cup with medium to coarse ground coffee beans. That ratio of beans is ideal to make a single cup of coffee at a time.