Great question! The ring sits on top of your portafilter and creates a raised wall that catches every stray ground during dosing and distribution. The eight embedded magnets hold it securely in place while still allowing smooth rotation. The result is a cleaner workspace, a more consistent dose weight, and ultimately a more even extraction in every shot you pull.

The height you need depends on your dose size and grinder. The 12mm (approx. 0.47 in) works well for standard doses with minimal overflow. The 20mm (approx. 0.79 in) is the most popular all-around choice. The 30mm (approx. 1.18 in) is ideal for larger doses or if your grinder tends to spray grounds high. When in doubt, 20mm covers most home setups nicely.

Absolutely. SUS 316 stainless steel is widely used in professional food processing and medical equipment because of its excellent corrosion resistance and non-reactive properties. It will not rust, leach metallic flavors, or degrade with regular exposure to coffee oils and moisture. You can feel completely confident that it is safe for direct contact with your coffee grounds every single day.

We recommend removing the dosing ring before locking the portafilter into your group head. The ring is designed for the dosing and distribution stage of your workflow. Simply grind into the portafilter with the ring attached, distribute and tamp your grounds, then lift the ring off before you lock in and brew. The magnetic attachment makes removal quick and effortless.

Keeping your ring in top shape is easy. After each session, give it a quick rinse under warm water and wipe it down with a soft sponge or brush to remove any coffee residue. Dry it thoroughly with a clean cloth before storing. The 316 stainless steel is naturally corrosion-resistant, so with this simple routine your ring will stay looking and performing like new for years.

Absolutely. Every espresso machine, grinder, and accessory is packed with the same precision we put into designing them. We use reinforced boxes and protective cushioning specifically tested for coffee equipment—because a damaged tamper or chipped machine housing isn't acceptable.

In the rare event your portafilter, grinder, or machine arrives damaged, our support team will sort it immediately with a replacement or full refund. No runaround.

Processing time: 1–3 business days
(Most orders ship within 24 hours—we know you're eager to dial in your shots)

Delivery time: 3–12 business days depending on your location

You'll receive real-time tracking from our warehouse to your kitchen counter. Watch your setup come together, step by step.