[Update Configuration Files] The cleaning disk is exactly the same as the latest accessories for the coffee machine. There is no water outlet in the center of the latest accessories; don't worry, there is a backflow device inside your machine. [Clean Your Espresso Machine] Keeping your espresso machine clean is essential for getting the best flavor of espresso every time. This backflush disk is an effective solution to help you maintain optimal coffee flow. [Widely Compatible] This backflushing disc provides a wide range of compatible devices: for BES870XL BES860XL BES840XL BES450 BES500 BES878, BES880, GRUPPO, SPAZIALE, SAN, WEGA. Color: Black Material: Silica gel Package Contents: 4 x Cleaning Disc Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allows an error of +/- 1-3cm.