Praying Mantis Wooden Assembling Puzzle Sculpture - Interlocking wood pieces Helps Kids Develop Coordination and Problem-Solving Skill Can be a 3-D Puzzle by Assembling Without Looking at Instructions Can be Assembled by Connecting the Numbers Can be Assembled by Looking at the Picture Only Two wood "sheets" with Pre-Cut pieces are approximately 7 1/8" x 9" x 1/8 inch thick. Comes with small piece of sandpaper.