Rocket Dosing Funnel Magnetic Black – for 58mm Portafilters
On a black machine, chrome simply disappears – and that is exactly where this funnel's story begins. Coated in matte black, it sets itself magnetically on the rim of the portafilter, guides the grounds cleanly into the basket, and blends in so quietly that in the end only the espresso itself stands out.
No shine to distract. Just the line of the machine, carried through to the basket.
What makes it special
Freshly ground coffee is feather-light and electrostatically charged – some of it likes to find its own way while you fill the basket, drifting across the drip tray instead of straight into the portafilter. The funnel gathers that scatter on its way to the coffee bed, so more of it arrives where it belongs – a small foundation for distributing, tamping, the extraction we at CCC prefer to think of by weight ratio rather than time alone. Whether 1:2 is your measure or something else that tastes right to you is your call. Our take on it is one of many.
The magnet holds the funnel exactly where it belongs, without you needing to hold it in place while dosing – both hands free for the scale and for watching the grounds. Under the black coating sits the same aluminum body as the light version, just dressed darker for anyone who builds their setup that way.
At a glance
| Material |
Aluminum, black coated |
| Attachment |
magnetic, on the portafilter rim |
| Fits |
58mm portafilters |
| Brand |
Rocket |
Who it is for
For anyone working at home with a 58mm portafilter, who likes to keep their setup dark, and who wants less powder on the drip tray when dosing. No prior experience needed, no adjustment, no extra tool required – it sits, it holds, and makes filling easier, whether it is day one with your own machine or years into espresso. No experience level left out, no budget too small for a bit more order at the machine.
Also worth a look
For tamping afterward, our Normcore Collection has the compact, precise option at a fair price, or our Weber Workshops Collection has the version with more heft in hand – both do the same job, just feel different. Weighing your grounds works much the same way: Normcore for anyone who wants something compact and reliable, or our Acaia Collection for anyone who also wants flow-rate display and app connectivity. And if you are after the right machine to go with it, our Rocket Espresso Collection is worth a look, or use our coffee machine comparison tool when the choice feels wide open.
Frequently asked questions
Will the dosing funnel fit my portafilter?
Yes, it is made for 58mm portafilters and holds magnetically on the rim, without you needing to hold it in place.
What is the difference between the black and the aluminum version?
Both funnels work identically – same size, same magnetic attachment, same function. The only difference is the look: one in bright aluminum, one black coated for anyone who keeps their setup darker.
How does the magnetic attachment work?
The funnel sets itself on the metal rim of the portafilter and stays there on its own until you lift it off after dosing.
What does a dosing funnel do for the espresso ritual?
It guides the grounds precisely into the basket, so less spills over the edge and the powder distributes more evenly – a small foundation for everything that follows in distributing and tamping.
Can I see the product before buying it?
Yes, you will find the dosing funnel in our showrooms in Bern (Gerberngasse 44) and Zurich (Hagenholzstrasse 50b). Buying online is the simplest way, with delivery throughout Switzerland and to Liechtenstein in 2–4 business days; if you would like to experience it live first, you are warmly welcome in the showroom.
Roastery tip
For a cleanly dosed espresso, our favorite pick from the roastery is Cozy Chocolate or Nutty Delight – full-bodied, aromatic, dense, exactly what most people want for a good start to the day. If you are after maximum body with no acidity at all, you will find it in Very Nutty. And for anyone curious about a fruity experience: Wild Peach is a discovery on the side, lively and fruity – never the headline, always an option. That is our recommendation, one of many; whichever bean tastes right to you is the right one.
