Designed as a good accessory for espresso machines, the coffee puck screen is easy to install and use. All you need to do is put the espresso filter screen in the 51mm espresso portafilter filter basket after pressing hard on the coffee pack. Then you can start extracting the flavored espresso coffee with the espresso machine filter. The espresso screen can automatically, skillfully and evenly disperse the water and promote the dissolution of the solid form of coffee bed, which helps you get a better espresso extraction. At the same time, it prevents the coffee grounds from sticking to the espresso maker and keeps the shower clean. You'll find that the espresso experience has changed for the better. In addition, different from other 304 stainless steel filters, this espresso filter uses higher quality 316 stainless steel which offers higher reusability and good filtration. It is easy to care for and clean, simply rinse and dry it or leave it in place. Because of these excellent characteristics, it is also widely used for home coffee, office coffee or professional cafe. Note: Please pick the right size of espresso puck screen to match the size of the espresso bottomless portafilter filter basket when purchasing. If you have any problems or questions, please feel free to contact us for support.