It measures 91mm x 91mm x 52mm.
We used Wenge and Maple in production of this puzzle.
Difficulty: Move: 45(23.14.7)
William Hu wrote about it:
"Arrow is a high level galaxy type
puzzle with 4 identical pieces. The trick here is that the tops and
bases of the pieces are different shapes; two different arrow shapes.
This makes a level 28.14 solution with a very fun sequence of moves!"