| Brand | Mefferts |
|---|---|
| MPN | MY169 |
| UPC | 779090901169 |
Check the listing for details. Pyraminx Duo Black Base - Meffert's Rotation Puzzle Brainteaser. Condition: New. Listed at 27.95 USD. The Pyraminx Duo is based on an idea by Rob Stegmann. Oskar developed a prototype of the puzzle, which is now produced as Pyraminx Duo. Pyraminx Duo is arguably the easiest non-trivial twisty puzzle.