Dosing ring fits and functions well on the Breville portafilter. Can't seem to find the right balance between dose and grind size for using the puck screen. Definitely slows down the pull. Will keep trying. Read more

Making this thing out of stainless steel was a dumb idea. It's way too heavy for the magnets to hold it on the portafilter, and the SS has no performance benefit over aluminum. Did not use the puck screen, so I can't comment on that Read more

Product works well as a dosing funnel but does not fit within the Breville barista express built in grinder. Would work great with an external grinder. It fits the Breville barista express porta filter well. The magnets keep it secured to the porta filter. The puck screen works well. Definitely helps with even water distribution resulting in better espresso. The puck screen did have a strong chemical smell but was relatively easy to wash out Read more