Miniland's 72-piece set Nuts and Bolts can help children learn colors and shapes, while having fun. Assorted nuts and bolts shaped like circles, squares and triangles, come in bright red, blue and yellow. Kids must match the shapes to put the nuts and bolts together. Figuring out which pieces fit helps children practice problem solving, and develops hand-eye coordination and small motor dexterity. The nuts and bolts come with a set of plastic activity worksheets. Activities have been tested in schools, and highly rated by teachers, for teaching color and shape recognition. Miniland Educational, a leading toy manufacturing company with production facilities in Onil, Spain, is known worldwide for safe, high-quality educational toys. A great deal of thought and research goes into design and production of Miniland Toys, but we never forget the importance of play. Manufactured according to strict European Union safety guidelines. Made of highly resilient plastic. Bolts are 2-1/2" long and nuts are 1-3/4" across. Suitable for children 3 years and older.