The flavor of coffee is already decided before brewing. This is a small tool for those who think so. A funnel for accurately and efficiently transferring the grounds ground with a Comandante C40 into a drip bag. It quietly eliminates noise such as scattering of grounds, loss, and interruptions in concentration. It doesn't do anything special. It just doesn't disrupt the process. That's all. Focus on home roasting, particle size control, and reproducibility of the amount. Leave this bagging step to this funnel. The product is the funnel in the fourth photo. * The fitting part is not a screw type, but a cover type. * This product is my original product. * The product has a layered pattern due to 3D printing, so please understand. Comandante