Simonelli Group Head Diffuser Plate 3mm, Part #07300183

Group Head Cap/Diffuser Plate 3mm. 

This is the standard dispersion plate that comes on all espresso machines by default. A consumer may choose to go with a bigger plate to add more pressure or accommodate pods. Similarly, switching to a smaller dispersion plate allows for more coffee in the portafilter. In most cases for ground espresso, a 3mm dispersion plate is best.