The Tumbler by Jon Keegan

I’m offering up this very nicely machined puzzle as I try to thin out my collection.

Comes in original packaging.

Here’s a description:

“ The Tumbler draws inspiration from Wil Strijbo's classic cylinder puzzle. This puzzle contains unique internal geometries and adds extra difficulty by introducing a rotating bottom end cap. Added slots and indicating marks are included to aid the puzzling experience.

Objectives:

1) Use indicating marks to find puzzle alignment.
2) Release tumblers into body of puzzle
3) Release tumbler end cap

Twist turn shake solve learn. No external tools required. No force required. All movements are gravity-assisted.  

Materials:  6061 Aluminum, Ball Bearings”

Shipping is as follows: 

 - USA or Canada is $20  which includes tracking

 - International is $20 without tracking and $40 with tracking

 - I can also combine puzzles, however shipping cost will need to be determined.

Please note that funds are in US Dollars