This is a kind of bottomless portafilter, which is made of food-grade stainless steel material, eco-friendly, more sanitary and safer. Ergonomically designed wooden handle, smooth grinding, comfortable to hold. Fine holes design, detachable design, convenient and quick to disassemble, more easy to use and easy to clean. Professional extraction equipment for making professional coffee. Suitable for semi-automatic coffee machine series universal. You can have a try.