La Marzocco’s own tamper — the “Standard European Convex Tamper” included with
its Home machines. It is 58mm (La Marzocco’s pages describe the Home portafilter
as taking “standard 58mm tampers”), but note the convex base: it is shaped to
match La Marzocco’s baskets and differs from the flat base of most third-party
58mm tampers. Cross-referenced to the Linea Mini, Linea Micra and GS3. Verified
against La Marzocco’s official pages on 2026-07-04.
FAQ
What size is the La Marzocco Standard European Convex Tamper?
It is a 58mm tamper, for 58mm portafilter machines.
Does the La Marzocco Standard European Convex Tamper fit 54mm Breville machines?
No. It is 58mm, so it fits 58mm-standard machines, not Breville's 54mm Barista/Bambino line.
Which machines does the La Marzocco Standard European Convex Tamper fit?
La Marzocco GS3; La Marzocco Linea Micra; La Marzocco Linea Mini — each confirmed against manufacturer sources (listed below).
https://home.lamarzoccousa.com/product/linea-micra/(archived) — Official La Marzocco Home (USA) Linea Micra page, read firsthand 2026-07-04, stating the Home-line portafilter is 'Compatible with all La Marzocco Home machines along with standard 58mm tampers' — i.e. La Marzocco's own tamper is the 58mm standard. (Note: it is a convex-base tamper, unlike the flat bases most third-party 58mm tampers use.)