Breville .BES870XL/11.10 One Cup Single Wall Filter， 54mm<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>One Cup Single Wall filter (non-pressurized)</li><li>54mm (2-1/8") diameter portafilter baskets</li><li>Fit these Breville Espresso Machines: BES860XL， BES840， BES840XL， BES870XL</li><li>Portafilter baskets are not one size fits all so double check your diameter in millimeters</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31GS%2BO%2B%2B5LL.jpg" noproxy>