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 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 Water Purging Hole -- cleaning disk compatible with select machines has a hole in the middle to purge water during use. 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 size:Diameter about 54mm Package Contents: 4 x Cleaning pad Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.