This is the frame for the Hyperbolic 29 puzzle, a hinged version of the classic 15 Puzzle, where five squares meet at every corner, rather than the usual four.
The tiles for the puzzle are SOLD SEPARATELY
, at http://shpws.me/SJra
You will also need forty (40) 8mm long M2 bolts and nuts to form the hinges of the puzzle. I used parts from two copies of this set: https://www.amazon.com/DYWISHKEY-Pieces-Socket-Screws-Wrench/dp/B07W5J19Y5