Features: Make of food grade Metal steel materials, Enduring, heat resistant and reusable. Coffee filter can evenly disperses the water flows, increase the solids dissolved into the espresso, help you get a better extraction effect. The addition of espresso machine filters improves water distribution and eliminates water flows blockage. Suitable for most kind of espresso machines. Filter is heat resistant, simple, practical and reliable for homes, kitchen and coffee bar. It's easy to clean and reusable, perfect addition to your coffee accessories. Specifications: Materials: 304 Metal steel Optional Diameter: 53.5mm(2.11inch)/58.5mm(2.3inch)/51mm(2.01inch)/53mm(2.09inch) Package Includes: 1Pc Coffee Puck Screen note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color .