Wide Compatibility: This coffee portafilter is suitable for Expobar, Rocket, Faema, Wega, EM19M2, Gemilai, Casadio, Ascaso, Sanremo, La Cimbali, Bezzera, Royal, and other binaural symmetrical 58mm commercial espresso machines. Bottomless Design: The bottomless design allows you to observe the flow column, flow rate, color, and flow column stripes, helping you correct and improve extraction problems for a more exquisite and consistent extraction. Aluminum Alloy Material: Made of environmentally friendly and harmless aluminum alloy, this bottomless portafilter is more hygienic and safer, oxidation-resistant, corrosion-resistant, rust-proof, and durable. Easy to Use: The detachable design is convenient and quick to disassemble, easy to use, and easy to clean without dead corners. A 58mm filter basket is included and compatible with Expobar filter baskets. Wooden Handle: The handle of the coffee portafilter is made of solid wood, providing a comfortable grip and stable handling.