EspressoFit

IMS B70 Competition 1 Cup H19.5 (B701TH19.5N)

verified · 26 July 2026
Border Ø 70mmTamper Ø 58mm19.5mmBody Ø 60mm
Cross-section to scale, from the dimensions IMS publishes for this basket. The border is what seats in the portafilter — not the tamper figure the size is usually quoted by. See why “58mm” isn’t one standard.

That model name is an IMS product code — series, cup count, height and hole pattern are all encoded in it. IMS basket codes, decoded explains how to read one, and lists every code covered here.

This basket is one of a line. See every IMS B70 Competition basket compared — the whole ladder of heights and variants on one page, with the three diameters they share.

Fits these machines

The taller of IMS’s two truncated-cone B70 singles at 19.5mm — one millimetre above the H18.5 — rated 7–9g for a dark roast and 9–11g for a light one. Single baskets are unforgiving because the puck is thin, so the shallow, narrow bed and the modest 177-hole count (0.30mm, normal pattern) are doing deliberate work: less open area than a double keeps resistance up at a small dose.

If you mostly pull doubles, the H24.5 or H26.5 1-cup baskets sit higher in the range. Standard B70 geometry otherwise — Ø70mm border, Ø60mm body, 60.5mm external ridge — and the same official B70 fitment: La Marzocco, Rancilio, Lelit, Rocket, ECM and the Breville Oracle. Gaggia is B68, not B70. Verified against IMS’s official product page and Competition catalogue.

Find the IMS B70 Competition 1 Cup H19.5 (B701TH19.5N) on Amazon (affiliate link — see our disclosure)

Also fits the same machines

Other items confirmed to fit machines this one fits — useful if you're kitting out a single setup. The count is how many of those machines overlap; nothing here is a new fitment claim.

FAQ

What size portafilter is the IMS B70 Competition 1 Cup H19.5 (B701TH19.5N) for?
It is a 58mm basket, 19.5mm deep, for 58mm portafilters.
Is the IMS B70 Competition 1 Cup H19.5 (B701TH19.5N) pressurized?
No — it is a non-pressurized (single-wall) basket, for freshly ground coffee.
Does the IMS B70 Competition 1 Cup H19.5 (B701TH19.5N) fit 54mm machines like the Breville Barista Express?
No. It is a 58mm basket, so it does not fit Breville's 54mm machines or any 54mm portafilter.
Which machines does the IMS B70 Competition 1 Cup H19.5 (B701TH19.5N) fit?
Breville Oracle; ECM Estetika; ECM Mechanika MAX II; Flair 58; La Marzocco GS3; La Marzocco Linea Micra; La Marzocco Linea Mini; Lelit Bianca (PL162T); Lelit Elizabeth (PL92T); Lelit Kate (PL82T); Lelit MaraX (PL62X); Lelit Victoria (PL91T); Rancilio Silvia; Rancilio Silvia Pro; Rancilio Silvia Pro X; Rocket Espresso Appartamento; Rocket Espresso Epica; Rocket Espresso Giotto Fast; Rocket Espresso Mozzafiato Fast; Rocket Espresso Porta Via; Rocket Espresso R Nine One — each confirmed against manufacturer sources (listed below).

Sources

Spot an error? The fastest fix is the source itself —send us the manufacturer page that contradicts this entry and we'll correct it and cite it. See how we verify.