# Why 58mm baskets don't fit Breville machines > Breville and Sage machines use a 54mm portafilter, not the 58mm standard — so 58mm baskets and tampers don't fit. Why, and the 54mm parts that do. Source: https://espressofit.com/guides/breville-54mm-vs-58mm/ --- It's the single most common fitment mistake: someone buys a "standard" 58mm basket, tamper or bottomless portafilter for a Breville and it simply won't seat. The reason is size. **Breville home machines use a 54mm portafilter** — not the 58mm commercial standard that La Marzocco, Rancilio, Lelit, Gaggia and most prosumer machines share. Four millimetres is the whole difference between a part fitting and not. (A few of Breville's commercial-style machines are the exception — more below.) ## Breville is 54mm (and Sage is the same) Breville's portafilter is **54mm**, a size essentially unique to Breville among common machines. In the UK and Europe these exact machines are sold under the **Sage** brand — same machines, same model names, same 54mm portafilter — so everything here applies to the Sage-badged equivalents too. A 58mm basket will not drop into a 54mm portafilter, and a 54mm basket rattles loose in a 58mm one; there is no adapter that makes them interchange. It is worth being precise about *why*, because the obvious arithmetic is the wrong arithmetic. The gap is not the 4mm between the two nominal sizes: those numbers describe the **tamper**, and a tamper is not the part that has to fit through anything. What has to fit is the basket’s **body** — and IMS publishes both. A 58mm B70 basket has a Ø60mm body; the 54mm B62.5 has a Ø54mm body. The real obstruction is **6mm**, not 4mm, and it is a different measurement than the one on the box. See [why “58mm” isn’t one standard](https://espressofit.com/guides/58mm-is-not-one-standard/). ## So what *does* fit a Breville? Only parts made for the 54mm format. The good news is Breville publishes its own OEM sizes clearly, so the fitment is well-documented. On the basket side, the main choice is single-wall vs dual-wall (see [single- vs dual-wall baskets](https://espressofit.com/guides/single-vs-dual-wall-baskets/)) — both in 54mm. For a tamper, you want a [54mm tamper](https://espressofit.com/guides/tamper-sizes/), not 58mm. ### 54mm baskets in the database (12) - [Breville 54mm Filter 1 Cup Dual Wall (SP0024834 / SP0001519)](https://espressofit.com/baskets/breville-54mm-dual-wall-1-cup/) (54mm, dual-wall) - [Breville 54mm Filter 2 Cup Dual Wall (SP0001521 / SP0024833)](https://espressofit.com/baskets/breville-54mm-dual-wall-2-cup/) (54mm, dual-wall) - [Breville 54mm Filter 2 Cup Single Wall (SP0001520)](https://espressofit.com/baskets/breville-54mm-single-wall-2-cup/) (54mm, single-wall) - [IMS B62 Competition 1 Cup 54mm (B62.51TH23E)](https://espressofit.com/baskets/ims-b62-competition-1-cup-54mm/) (54mm, single-wall) - [IMS B62 Competition 2 Cup 54mm (B62.52TH24E)](https://espressofit.com/baskets/ims-b62-competition-2-cup-54mm/) (54mm, single-wall) - [IMS B62 Competition 2 Cup 54mm H22 (B62.52TH22E)](https://espressofit.com/baskets/ims-b62-competition-2-cup-54mm-h22/) (54mm, single-wall) - [IMS B62 Competition 2 Cup 54mm H26 (B62.52TH26E)](https://espressofit.com/baskets/ims-b62-competition-2-cup-54mm-h26/) (54mm, single-wall) - [IMS B62 Competition 2 Cup 54mm H28 (B62.52TH28E)](https://espressofit.com/baskets/ims-b62-competition-2-cup-54mm-h28/) (54mm, single-wall) - [IMS B62 Competition Nanotech 2 Cup 54mm H22 (B62.52TH22NT)](https://espressofit.com/baskets/ims-b62-competition-2-cup-54mm-h22-nanotech/) (54mm, single-wall) - [IMS B62 Competition Nanotech 2 Cup 54mm H24 (B62.52TH24NT)](https://espressofit.com/baskets/ims-b62-competition-2-cup-54mm-h24-nanotech/) (54mm, single-wall) - [IMS B62 Competition Nanotech 2 Cup 54mm H26 (B62.52TH26NT)](https://espressofit.com/baskets/ims-b62-competition-2-cup-54mm-h26-nanotech/) (54mm, single-wall) - [IMS B62 Competition Nanotech 2 Cup 54mm H28 (B62.52TH28NT)](https://espressofit.com/baskets/ims-b62-competition-2-cup-54mm-h28-nanotech/) (54mm, single-wall) ## And the one people keep looking for: VST VST precision baskets have a reputation as *the* upgrade, so a lot of Breville owners go looking for a 54mm one. There isn’t a 54mm VST basket, and VST rules it out on its own store page: *“VST Filters DO NOT fit 49, 53 or 54mm portafilters.”* The whole VST range is 58mm. The nearest equivalent for this format is IMS’s **B62.5** series, which IMS describes as “a dedicated line for 54mm group heads found in the Barista Express, Bambino, Pro, and Touch models” — those are the IMS baskets listed above. More answers of this kind in [parts that don’t exist](https://espressofit.com/guides/parts-that-dont-exist/). ## The 54mm Breville machines we cover Each links to its page with the portafilter size and every basket and part confirmed to fit it — or start from the [Breville brand hub](https://espressofit.com/brands/breville/) or the [54mm standard](https://espressofit.com/standards/54mm/) page. - [Breville Bambino](https://espressofit.com/machines/breville-bambino/) (54mm) - [Breville Bambino Plus](https://espressofit.com/machines/breville-bambino-plus/) (54mm) - [Breville Barista Express](https://espressofit.com/machines/breville-barista-express/) (54mm) - [Breville Barista Express Impress](https://espressofit.com/machines/breville-barista-express-impress/) (54mm) - [Breville Barista Pro](https://espressofit.com/machines/breville-barista-pro/) (54mm) - [Breville Barista Touch](https://espressofit.com/machines/breville-barista-touch/) (54mm) - [Breville Barista Touch Impress](https://espressofit.com/machines/breville-barista-touch-impress/) (54mm) - [Breville Duo Temp Pro](https://espressofit.com/machines/breville-duo-temp-pro/) (54mm) - [Breville Infuser](https://espressofit.com/machines/breville-infuser/) (54mm) ## The exception worth knowing Breville Dual Boiler, Breville Oracle, Breville Oracle Dual Boiler, Breville Oracle Jet and Breville Oracle Touch use a **58mm** portafilter instead — built around a commercial-style group rather than Breville's 54mm home format. So for these, standard 58mm baskets and tampers are what you want. Everything else in Breville's home line is 54mm; when in doubt, check the specific machine's page rather than assuming. - [Breville Dual Boiler](https://espressofit.com/machines/breville-dual-boiler/) (58mm) - [Breville Oracle](https://espressofit.com/machines/breville-oracle/) (58mm) - [Breville Oracle Dual Boiler](https://espressofit.com/machines/breville-oracle-dual-boiler/) (58mm) - [Breville Oracle Jet](https://espressofit.com/machines/breville-oracle-jet/) (58mm) - [Breville Oracle Touch](https://espressofit.com/machines/breville-oracle-touch/) (58mm) ## How we verify Every size here is quoted from Breville's own product and parts pages on each entry. See [how we verify compatibility](https://espressofit.com/methodology/), or the [portafilter sizes guide](https://espressofit.com/guides/portafilter-sizes/) for how 54mm compares to 58, 57 and 52mm. --- From EspressoFit — a sourced espresso parts compatibility database. Every fitment claim on this site cites the manufacturer page it was verified against, with the date it was read. See https://espressofit.com/methodology/