Mechanical engagement ring box

Now this is how a machinist gets hitched! This is a locking mechanical iris box for an engagement ring that was completely designed and built by O’Bannon Custom Designs. Just have a look at that sexy mechanical movement. There is no way she could have said no!


  • Walnut and aluminum construction
  • Double micro bearings at each joint ensure buttery-smooth operation
  • 22 walnut inlays in the aluminum
  • Custom engraving
  • LED ring illumination with hidden switch and battery pack
  • Custom heart key

We’re currently sold out. If you’re interested in purchasing a Mechanical Iris Lock Box, please add your contact information to our waitlist here. We’ll be sure to notify you when we have more ready to ship out!

If you’d like more information or to discuss a custom order, please contact us here.

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