- Inner Diameter: 58mm (approx. 2.28 in)
- Outer Diameter: 72mm (approx. 2.83 in)
- Height: 20mm (approx. 0.79 in)
- Weight: approx. 4.4 oz (124g)
- Material: Food-grade 304 stainless steel, North American black walnut
- Magnets: 6 embedded magnetic beads
- Compatibility: 58mm portafilters
F.A.Q.
This ring is designed for any machine that uses a standard 58mm portafilter, which covers most E61 group heads and many popular home machines like the Breville Barista Express and Lelit Bianca. The inner diameter is precisely machined at 58mm (approx. 2.28 in) for a snug, wobble-free fit. If your portafilter basket measures 58mm across, you are good to go.
Absolutely. The six strategically placed magnetic beads create a firm hold that keeps the ring locked onto your portafilter during grinding and WDT distribution. You can rotate the ring freely without it lifting off. When you are ready to remove it, a simple upward pull is all it takes. The magnetic strength strikes a perfect balance between secure attachment and effortless removal.
Yes. The North American black walnut exterior is carefully finished to be safe around food contact areas. The inner structure uses food-grade 304 stainless steel, which is the same steel used in professional coffee equipment and kitchen tools. The walnut primarily serves as the outer grip surface and is sealed to resist moisture and coffee oils over time.
That is exactly how it is designed to be used. Place the ring on your 58mm portafilter, position it under your grinder, and dose as usual. The 72mm expanded funnel (approx. 2.83 in) catches any stray grounds that would normally scatter across your counter. It also works perfectly for single-dosing workflows where you transfer pre-weighed beans from a cup into the basket.
Keeping this ring in great shape is simple. After each session, wipe the walnut and steel surfaces with a dry or slightly damp cloth to remove any coffee residue. Avoid submerging the ring in water or running it through a dishwasher, as prolonged moisture can affect the walnut finish. An occasional light application of food-safe wood oil will keep the grain looking rich and vibrant for years.
Shipping & Delivery
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.

