Rocket Knock Box Stainless Steel – with Knocking Bar
A quick tap against the padded knocking bar, and the puck comes loose from the portafilter on its own. The knock box from Rocket stays put on the counter – the non-slip rubber base holds it steady, while the mirror-polished stainless steel catches the light of the kitchen.
Coffee Coaching Club is a partner of Rocket in Switzerland.
What makes it special
Rocket makes the knock box in Italy, to the same standard as the brand's espresso machines: cleanly finished, mirror-polished stainless steel and a non-slip rubber base that keeps it in place even with a firm tap. The padded knocking bar protects both the rim of your portafilter and your wrist – a small detail that makes the daily routine after your espresso more pleasant.
At a glance
| Type |
Knock Box |
| Material |
Stainless steel, polished |
| Base |
Non-slip rubber base |
| Dimensions |
approx. 10.5 × 14.5 cm (W × H) |
| Detail |
Rocket branding, padded knocking bar |
| Manufacturing |
Made in Italy |
Who it's for
For everyone with an espresso machine at home or in the office who's tired of knocking grounds into the sink or the compost bin. Single boiler, heat exchanger or dual boiler, Rocket or another brand – the knock box takes any portafilter. Our opinion is one of many, but we think it simply belongs to the daily espresso ritual.
What goes with it
A tamper from our Tamper Collection pairs well with the knock box: affordable and precise with the Normcore Spring-Loaded Tamper, more presence with the Weber Workshops Tamper. For the machine next to it, see our Rocket espresso machines, and for the right grinder the Varia Collection or more choice among the Eureka grinders.
Frequently asked questions
What is the knock box for?
You knock the used coffee puck out of the portafilter against the padded bar, and the grounds collect in the polished steel box.
Does it fit every portafilter?
Yes, it can be used independently of the machine model and brand.
What is the rubber base for?
The non-slip base keeps the knock box steady on the counter even with a firm tap.
How do I clean the knock box?
The polished stainless steel rinses easily with water and wipes dry; a soft cloth is usually enough to keep the shine.
Can I see the product before buying?
Yes, in our showrooms in Bern and Zurich.
Roastery tip
After the knock comes the next shot – and that starts with the bean. Our Cozy Chocolate and Nutty Delight are a reliable place to start, dense and aromatic. That's our recommendation, one of many.
