What size is my espresso machine?
Your portafilter group size - 51, 54 or 58mm - decides which baskets, tampers and portafilters fit. Find your machine below, then open its size hub.
Three sizes cover almost every home machine. Match parts to your group exactly - there is no adapter between sizes (tampers excepted: buy 1mm under).
Machine not listed? Measure across the inside of your portafilter basket (or the group the portafilter locks into): roughly 51, 54 or 58mm. When in doubt, check your machine's manual - the basket spec is the source of truth.
Browse by size
51mm
Budget entry
Basic bottomless portafilters and a few baskets.
Open the 51mm hub → 54mm
Breville standard
Bottomless PFs, single-wall & precision baskets, tampers (53mm), distributors, shower screens.
Open the 54mm hub → 58mm
Commercial standard
VST/IMS precision baskets, bottomless PFs, tampers (58mm), PID & OPV mods.
Open the 58mm hub →