D20 Mechanical Decision Spinner
D20 Mechanical Decision Spinner
The “you pick / no, you pick” loop, ended in about four seconds. Twenty slots, one steel ball, two bearings. No app, no battery.
Anodized aluminium body · Rose-gold engraved bezel
Why it exists
Dinner. Which task first. Who goes first. Which of the twelve open tabs you actually read. Most of these decisions aren't worth the fifteen minutes you hand them — they're worth one spin.
- Ends the tieTwo people, one wheel, nobody has to be the bad guy.
- Beats a coinTwenty outcomes instead of two, so a whole list fits on one wheel.
- No screen involvedNothing to charge, unlock, or get pulled out of by a notification.
- Feels like an instrument124.6 g of machined metal and a bearing that actually spins.
How it works
Flick the hub
One finger on the rose-gold hub is enough. The R188 takes it from there — the disc keeps turning long after your hand is gone.
Press to stop
Push the centre cap whenever you're ready. The disc brakes and the stainless ball drops out of the track.
Read the slot
The ball settles into one of twenty slots and a magnet holds it there. That's your answer, and it doesn't care how you feel about it.
What's inside
Every layer does one job. Nothing in here is decoration pretending to be engineering.
- LensHigh-transparency, scratch-resistant window over the disc.
- Number discTwenty machined slots, engraved digits.
- Steel ballStainless bead, magnetically seated on landing.
- R188 bearingCarries the disc for the long free spin.
- 6703 bearingMain shaft. Kills the wobble.
- Magnetic baseLocks the result so it can't drift.
The feel
Single-bearing spinners wobble and stall. The main shaft rides a 6703, the disc rides an R188 — spin-up is effortless, run-down is long and quiet.
The outer ring rotates independently, so you can index it against whatever the twenty numbers mean today — restaurants, chores, party rules, initiative order.
Carry
The cap screws down over the wheel when you're not using it, so nothing rattles and nothing scratches. Clip the chain to a belt loop, a bag, or your keys.
Make it yours
Steel, violet, gold. Each bead has its own weight, so each one lands with a different click and settles at its own pace.
Which colours and spares are included depends on the version you choose — check the product options above.
Specification
| Diameter | 51.2 mm / 2.02 in |
|---|---|
| Height | 24.2 mm / 0.95 in |
| Weight | 124.6 g / 4.39 oz |
| Slots | 20, magnetically seated |
| Bearings | 6703 main shaft + R188 disc |
| Body | CNC aluminium alloy, anodized |
| Bezel | Rose-gold plated, engraved, free-rotating |
| Lens | High-transparency, scratch-resistant |
| Power | None. It's mechanical. |
Who reaches for it
Before you buy
Is it actually random?
Results come from real physical movement, so outcomes naturally vary from spin to spin and the landing slot isn't something you can time or aim. It's an entertainment product, not a certified random number generator. If you need cryptographic randomness, use a computer. If you need to stop arguing about lunch, use this.
Can I assign my own meanings to the numbers?
That's the point. The outer ring rotates independently, so most people write a list of twenty, index the ring to it, and re-use the wheel for something else tomorrow.
How loud is it?
A soft mechanical click when the ball drops, and near silence while it spins. It's meeting-safe, though the people around you will want a turn.
Does it need a battery or an app?
No. There's no electronics inside it at all — bearings, a magnet, and a steel ball.
Is this designed for gambling?
No. It's a mechanical randomizer, decision-making gadget and desk toy. It isn't intended for real-money gambling.
Will the rose gold wear off?
The bezel is plated over machined aluminium and the contact surfaces are the black body, not the plating. Normal pocket carry won't strip it. Keys in the same pocket eventually will — that's what the cap is for.
How does shipping and returns work?
We ship worldwide with tracking. If it isn't for you, our 30-day return policy has you covered — the Return & Refund page has the full details.
Carry it, use it, hand it to strangers. If it doesn't earn the space in your pocket, our 30-day return policy covers it.
D20 Mechanical Decision Spinner
Worldwide shipping · 30-day returns · Secure checkout