Melissa & Doug Sort! Match! Attach! Nuts and Bolts Boards - Educational Toy With 12 Nuts, 12 Bolts, and 6 Wooden Boards Six double-sided wooden boards with 12 picture puzzles. Twist together the nuts and bolts to find the pairs and complete the pictures. Includes 12 oversized nuts and bolts. Great hands-on challenge. Cognitive skills and a motor-skills booster.