MHW-3BOMBER Cyclone Needle Distributor (Yu Series) – rotating WDT tool 58 mm
You place the tool on the portafilter, it holds on its own, and with every press on the handle, the fine needles rotate like a small vortex through the grounds. Clumps break apart, the powder settles loose and even – without you having to stir by hand.
A WDT tool that rotates its needles under pressure and sits magnetically on the basket.
Why WDT makes the difference
Grinding creates small clumps, and where the grounds sit denser, water flows more slowly – where they're looser, it rushes through. This channeling makes extraction uneven. The fine needles reach deep into the grounds, break up the clumps, and distribute everything evenly before you tamp.
The Cyclone from the Yu Series works with 14 thin 0.25 mm needles spaced about 1.58 millimeters apart. Press the handle, and they rotate via a one-way ball bearing – a calm, uniform motion. Ten magnets on the base hold the tool firmly on the basket rim, so nothing shifts while distributing. Made from SUS304 stainless steel, aluminum, and silicone, designed for 58 mm portafilters. Espresso is a craft, not a law. Our opinion is one of many.
At a glance
| Type |
rotating WDT tool (needle distributor) |
| Needles |
14 pieces, 0.25 mm, spaced about 1.58 mm |
| Mechanism |
Rotation by pressure via one-way ball bearing |
| Grip |
10 magnets on the base for a firm hold |
| Diameter |
58 mm (for 58 mm portafilters) |
| Material |
SUS304 stainless steel, aluminum, silicone |
Who it's for
For anyone with a 58 mm machine who wants to break up the grounds quickly and evenly. The rotating mechanism and magnetic hold make the motion especially calm and repeatable.
What to pair it with
A WDT tool works together with a distributor and tamper. You'll find tampers, distributors, and Puck Screens affordably priced in our Normcore Collection and beautifully crafted in our Weber Workshops Collection; more tools are in our Tamper Collection.
And because an even bed only truly matters with the right machine, it's worth a look at our espresso machines – supported by our advisory tool.
Frequently asked questions
How does the rotation work?
Press the handle down, and the needles rotate through the grounds via a one-way ball bearing. This distributes evenly without stirring by hand.
What are the magnets on the base for?
Ten magnets hold the tool firmly on the basket rim, so it doesn't shift while distributing – this keeps the motion calmer and cleaner.
Does the Cyclone fit my basket?
This version is made for 58 mm portafilters. The needles reach across the surface while the tool sits magnetically on the rim.
Can I see the tool in person before buying?
Very welcome. You can experience it live in our showrooms in Bern (Gerberngasse 44) and Zürich (Hagenholzstrasse 50b). Online, we deliver in 2–4 business days, throughout Switzerland and to Liechtenstein.
A tip from our roastery
An even distribution really shows in rich, sweet roasts. Our Cozy Chocolate and Nutty Delight taste round and are forgiving. For maximum body without any acidity, the Very Nutty, and for a fruity experience, the Wild Peach. That's our recommendation – one of many.
