Replacement diffuser block for the Decent espresso machine. Sized for 55mm shower screens and built in spacer height. Photos and video below compare my geometry to the factor brass diffuser. Goal was to create even flow through an additional array of jets (and arranged more evenly) made possible by using a larger shower screen.

Diffuser is machined from stainless steel and electropolished. The slick finish keeps the group head clean longer. As the original brass diffuser oxidizes, it acts like velcro for coffee oils and grime to build up. 

A GA35WM shower screen from IMS is available to pair with your new diffuser.