Espressos machine portafilter (Shepreth, nr Royston)

A 51mm, Neouza three prong portafilter. These are usually compatible with Delongi, Breville or Sage machines.

Amazon link for reference - https://www.amazon.co.uk/gp/aw/d/B0DNTQMWRQ?psc=1&ref=ppx_pop_mob_b_asin_title

This portafilter has an 'unpressurised basket', which can help make better quality espresso in simple home machines.

I bought the wrong one, and Amazon don't want it back.