Features: *Brand new and high quality. *Effectively improves extraction efficiency. *The main purpose is to prevent the of high-pressure hot water on the coffee powder, causing the of the powder to crack. *The cracked powder will produce a lot of "floating" subdivisions, which is easy to over-extract and produce miscellaneous flavors, and it will to the upper water separator after extraction. *This puck screen will disperse water evenly, increase the amount of solids that dissolve into the espresso, helping you get better extraction. *It is simple, practical and reliable, suitable for household, kitchen and coffee bar. Specifications: Material: Stainless steel Color: Silvery Size: 51mm, 53mm, 58mm Thick: 1.7mm Filtering accuracy: 150 μm Weight: approx.15g Package list: 1 x Coffee Filter Screen Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.