[Update configuration files]The cleaning disk are exactly the same as the latest accessories of the for 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 get the best shot of espresso every time. This backflush disk is a effective solution to help your maintain optimal coffee flow.[Widely Compatible]This backflushing disc, providing a wide range of compatible devices: for BES870XL BES860XL BES840XL BES450 BES500 BES878. BES880, GRUPPO , SPAZIALE, , WEGAColour:blackMaterial:Silica gelPackage Contents:4 * Cleaning DiscOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!