The other day, a customer asked me about something

that I'm already doing on my cyclocross bike covered in Arcanciel colors—
using thin aluminum spacers in five colors to create the Arcanciel look—
so I looked into it a bit.
Yoshigai had a set sale of these five-color headtube spacers,
but it seems they were a limited edition and aren't available anymore.
However, they currently have standard distribution in three thicknesses—2mm, 5mm, 10mm—
and nine colors: silver, black, red, pink, green, blue, grey, gold, and purple.
So it's still possible to make them from these. Since the original was five pieces per set,
I sourced one set each of blue, red, black, gold (in place of yellow), and green,
made five Arcanciel sets, and sold them.
Then the same customer asked me recently
if I could do something similar with the five crank pins, so I sourced

↑this.
In reverse order, I actually installed it on my own bike first before the customer saw it.
It's configured with the five Arcanciel colors plus pink and silver—seven colors total.
Most cranks that use these chainring pins are either 4-arm or 5-arm,
I don't think there are any 7-arm ones, but dutifully, there are seven nuts included.

I installed them.
I arranged them so the colors flow from the Arcanciel colors above when rotating in the direction of travel,
which means the sequence is counter-clockwise.
The trouble is, this seven-color set appears to be a limited edition spot production item.
It comes in single and double versions, and while the single version arrives right after ordering,
there's been no word on the double version. They seem to be out of stock at the factory.
(Like the spacers at the start, it is possible to buy five colors individually and make five sets)
Also, if the nut side is long enough for the double version,
it seems the hollow bolt side could work with the single version pieces.

I reused the nuts that came originally installed, so seven extras remained.
The included instruction sheet had a square folded in half to make a rectangle... well, not exactly,
but the aspect ratio was extremely close to that.

You can fold a "shirt origami"!

that I'm already doing on my cyclocross bike covered in Arcanciel colors—
using thin aluminum spacers in five colors to create the Arcanciel look—
so I looked into it a bit.
Yoshigai had a set sale of these five-color headtube spacers,
but it seems they were a limited edition and aren't available anymore.
However, they currently have standard distribution in three thicknesses—2mm, 5mm, 10mm—
and nine colors: silver, black, red, pink, green, blue, grey, gold, and purple.
So it's still possible to make them from these. Since the original was five pieces per set,
I sourced one set each of blue, red, black, gold (in place of yellow), and green,
made five Arcanciel sets, and sold them.
Then the same customer asked me recently
if I could do something similar with the five crank pins, so I sourced

↑this.
In reverse order, I actually installed it on my own bike first before the customer saw it.
It's configured with the five Arcanciel colors plus pink and silver—seven colors total.
Most cranks that use these chainring pins are either 4-arm or 5-arm,
I don't think there are any 7-arm ones, but dutifully, there are seven nuts included.

I installed them.
I arranged them so the colors flow from the Arcanciel colors above when rotating in the direction of travel,
which means the sequence is counter-clockwise.
The trouble is, this seven-color set appears to be a limited edition spot production item.
It comes in single and double versions, and while the single version arrives right after ordering,
there's been no word on the double version. They seem to be out of stock at the factory.
(Like the spacers at the start, it is possible to buy five colors individually and make five sets)
Also, if the nut side is long enough for the double version,
it seems the hollow bolt side could work with the single version pieces.

I reused the nuts that came originally installed, so seven extras remained.
The included instruction sheet had a square folded in half to make a rectangle... well, not exactly,
but the aspect ratio was extremely close to that.

You can fold a "shirt origami"!