4Pcs 50/57mm Food Grade Silicone Backflush Disc Blind Filter Coffee Cleaning Pads for Espresso Machines Insert For Breville Coffee Machine Portafilter Backwashing Tools Backflush Disk Filter Disc Pads Set Include : 4Pcs Backflush Disc Condition : Brand New Material : 100% Silicone Features 4Pcs food grade silicone backflush disc blind filter coffee cleaning pads for espresso machines. Made of high quality and food grade silicone, odor free and non-toxic, can be used for a long time. Each package includes 4pcs backflush disc, 57mm and 50mm for option, enough to meet your daily need. Backflush disc makes your coffee flowing without clogging, which is an effective solution to maintain coffee flow. Can work with universal espresso machines. Please check the size details carefully before ordering. Size (Diameter) : 5cm/2 inch; 5.7cm/2.28 inch Friendly Tips: The size is measured by hands, please allow minor error of measurement. Photo color might be a little different from the actual product due to color display of different monitors.