Filter Baskets come in a variety of diameters. Use the chart below to find the right size. If your machine is not listed, measure across the inside of the basket to determine diameter and subtract 1 mm.

This is a conical 58mm basket from the Rancilio Miss Sylvia V3, note how the sides slope in a short way down from the top. If you have a conical basket not listed below measure across the ridge where the sloping begins and subtract 1mm.	This is the 53mm basket from a Starbucks Barista (Saeco) machine. If your basket has vertical sides, measure across the inside of the basket and subtract 1mm.