A pack of 40 Hario filters, designed for the cone-shaped #02 coffee drippers, Hario Glass Coffee Dripper. The Hario Glass Coffee Dripper brews a great single cup, but you need to make certain that you are using the right filter to achieve the desired results. The bottom of the Hario #1 and #2 filters comes to a point, which fits with the overall design of the brewer and extracts beautifully.