This is a direct replacement for the M5x8mm stainless steel philips head screw holding the shower screen in place on most Gaggia Semi-Automatic Espresso machines, such as the Gaggia Classic (including models as far back as 1989 so long as they utilize a shower holding plate using a screw as a screen-retaining mechanism such as the Classic Pro, Classic Evo Pro, Classic E24), Gaggia Baby models (including Baby White, Baby Black, Baby Twin, Baby 89, Baby Millennium, Baby Class, New Baby), Gaggia Carezza (pre-2004), the original release of the Gaggia Evolution, and Gaggia Espresso models released prior 2006.