Perfect Addition to Espresso Brewing - Improve water distribution and eliminate channeling.Keeps Brew Head Clean - Protects the brew head from grounds being sucked up when Lever is lifted.Easy Rinse to Clean - Easily flushed out under the tap to remove any grounds from within.Note: Given the thermal mass of the screen, it is recommended that it is placed in the portafilter and locked in just before turning on the preheat controller.Colour: SilverMaterial: stainless steelSize: thick 1.7mm, diameter 51mmPackage Contents:2 x Coffee handle accessoriesOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.