Making a perfect cup of coffee means using quality tools to help reduce variables to ensure you are consistent each time. Good grind distribution and a level puck in the portafilter ensure even extraction and without channelling. The ECM Coffee Leveler ensures consistently optimal extraction. It is compatible with most 58mm portafilters. Handmade in aluminium and stainless steel Infinitely adjustable pressure depth Easy to use Fits perfectly into portafilter Diameter: 58 mm