Fangrui Product Details Regular Maintenance Essential: To The Espresso Flavor And Machine Performance, Regular Cleaning Is Crucial. 54mm Silicon Cleaning Disc Is Designed For Easy And Effective Interior Maintenance Of Your Espresso Machine, Ensuring And Consistent Taste. Broad Compatibility: This Espresso Backflush Disc Is Tailored For A Range Of Models Including Bes810bss, Bes840xl, Bes878bss, Bes880, And Bes870xl. Its 54mm Size Also Suits Other Espresso Machines, Making It A Versatile Accessory For Any Coffee Enthusiast. Innovative Design With Water Purging Hole: Specially Designed With A Small Central Hole, This Cleaning Disc Allows Water To Drain Smoothly During The Cleaning Process. Its An Essential Tool For Maintaining The Optimal Function Of Your Espresso Machine. User-friendly For All Coffee Lovers: Whether Youre A Professional Or A Home Coffee Enthusiast, Our Espresso Backflushing Cleaning Tool Is Simple To Use. Just Insert The Disc Into The Handle, Follow The Visual Instructions Provided, And Run The Cycle To Mai