Availability: In stock

Tesseract Cassette: 864 Gun-Metal Neoballs



We usually ship within 24 business hours. Shipping is a flat $5 for all US Domestic orders. Free shipping on orders over $100.


We usually ship within 24 business hours. Shipping is a flat $5 for all US Domestic orders. Free shipping on orders over $100.



Grey storm light leaks through // heavy clouds and the rain plays // the world like a drum.

Haiku by Peter Galen Massey


Comes with:

  • 864 Gun Metal Neoballs (5mm) Magnet Spheres
  • Child Safe Case
  • Quick Build Guide
  • A revival of your childlike sense of wonder


According to various rappers, nothing is harder than guns. So we named these Neoballs after the hardest part of guns - the metal. Our Gun-Metal Neoballs are composed of black nickel, which provides a sleek decorative coating that offers equal protection as Nickel neodymium magnet balls (which is a lot of protection, check them out. The color is very similar to charcoal, except shiny, or George Clooney’s hair in 1998 except a magnetic sphere, or Nickel neodymium balls except dark.

Electro neodymium magnetic balls are harder overall than their Coated relatives, and nickel is the hardest of our Electro platings. The coating may corrode slightly over extended periods of time - but used with care (and not given to children, because children eat fun, shiny magnets - and later require not-fun, not-shiny medical surgery), these neodymium magnets can provide years of shiny, gun-metal-y, magnetic fun. The color doped coating can rub off onto the hands, and will leave discoloration on the skin after extended use and rough kneading - similar to your mom.


Gun Metal Corrosive Resistance

Slightly susceptible to oxidation, rusting, tarnishing, and moisture erosion.


Gun Metal Geometric Tolerance

Pretty great shape and size consistency of magnets. These magnets feature a variance of ± 0.02mm. The only magnets with a tighter tolerance are Zen Magnets.


Gun Metal Impact Hardness

Superb shielding to collision, scraping, hitting and dropping. These are the magnets to have if you play rough.


Gun Metal Abrasive Strength

Okay strength against rubbing, wiping, brushing, and kneading. This coating will rub off onto your hands after extended use.




Customer Reviews

Based on 14 reviews
color difference!

For the holiday I ordered 2 sets including the gunmetal and nickel. after a fast delivery I already had them at home (the Netherlands) after two weeks. I noticed that the color difference was less than I expected. but they are beautiful sets. the mistery box is still on my wish list.

Love these things

I've purchased similar magnets from other manufacturers and these are by far superior both in feel and magnetic strength.

Fun to play with but ok quality

These magnets are great and I enjoy building with them but they chipped after a week of using them but they held up better than the neocubes which I had purchased and a couple of them broke even sooner but overall they are very fun but fragile

They're great!

I was so sad when Buckyballs when off the market and now I'm thrilled to have found Zen Magnets and NeoBalls! I bought a bunch of different metal finishes and the gun metal is my favorite. Feels solid and even and doesn't chip. Just perfect.

Grandson loved them!

Got the gun metal and a set of red - he has already enjoyed them for countless hours - great for kids who need to do something constantly with their hands!