The Locomotive 3D Crystal Puzzle from BePuzzled is a beautiful engine with its own train track stand. It is a sleek, translucent, crystalline puzzle with 38 unique interlocking pieces. When you’ve pieced it all together (be ready for a challenge), its glossy, sleek design will make a nice decoration for any room. This 3D puzzle has a difficulty level of 1. Approximate assembled size = 4" x 1-1/2" x 2-1/2".