Original 3D Crystal Puzzle - Locomotive The Original 3D Crystal Puzzle - Locomotive from BePuzzled is a sleek, translucent puzzle with 38 unique interlocking pieces Take puzzling to a whole new dimension with this beautiful engine and train track stand Enjoyable to work on, challenging to complete and beautiful to display This 3D puzzle has a difficulty level of 1 and is fun for puzzlers age 12 and up Approximate assembled size = 4" x 1-1/2" x 2-1/2"