It works very well. Be aware of gaskets from other vendors particularly Amazon do not fit OK and sooner or later they generate problems such as leaks, etc.
70mm (OD) x 56mm (ID) x 8.5mm (T)
Compatible with Gaggia Classic, Baby, Baby Class, Baby Twin, Espresso, Evolution, Carezza, Cubika,
Fits all Gaggia Traditional Espresso machines except for the Gran Gaggia, Espresso Pure, & Espresso Color.