Perfect Fit for Breville Machines: Designed specifically for Breville espresso models including BES870, BES876, BES878, BES880, BES980, BES990, BCG600, BCG820, ensuring a snug and secure fit. The lower burr washer part number is SP0001575 Premium Felt Washer Lower Burr: Made from high-quality wool material, this lightweight and soft washer boasts excellent moisture absorption while remaining insoluble in water Essential Grinder Accessory: Preventing coffee dust from infiltrating the motor. Regular replacement during deep cleaning is recommended, especially when the wool gasket shows signs of wear or damage Comprehensive Package: Includes 4 felt washer lower burrs for Breville espresso grinders (BES870XL and compatible models). Each felt washer comes with a central wool circle to prevent deformation during shipping Easy to Install: Simply remove the old felt washer with a tool, clean the coffee grounds, and install the new wool ring over the bronze ring, ensuring a proper fit for optimal performance ASIN B0F4TXZTP2 Brand Name VLONCY Manufacturer VLONCY Model Number Burr for Breville Espresso Machine 4PCS Material Type Wool Number of Pieces 4 Compatible Devices for Breville Espresso BES870, for Breville Espresso BES876, for Breville Espresso BES878, for Breville Espresso BES880, for Breville Espresso BES980 BES990 BCG600 BCG820 Manufacturer Part Number EMRP-A101-4AA