Clean Your Espresso Machine -- To the of espresso time, your machine needs to run smoothly. Regularly backflushing the valve system will help maintain optimal coffee flow. Use cleaning disc compatible with select espresso machines with a tablet to the (tablets not included) Exact Fit For -- Blind espresso disc is precision cut to fit models - Duo-Temp Pro, the Infuser, the Barista Pro, The Barista Touch, The Barista and more (BES810BSS, BES840XL, BES878BSS, BES880, BES870XL). It may work with other espresso machines as well Water Purging Hole -- cleaning disk compatible with select machines has a hole in the middle to purge water during use. Protect your espresso maker with the right accessories Easy To Use -- Whether you are a professional barista or at-home coffee enthusiast, backflushing with this espresso cleaning tool is simple. Place it in the portafilter and run the a few Durable -- They are made from high quality that will last for years. Using a backflush insert with espresso cleaning tablets will help extend the life of your machine colour:Dark gray Material:Silica gel size:Diameter about 54mm Package Contents: 4 x Cleaning pad 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.