With 48 wooden pieces (including nuts, bolts, drilled bars to connect, and a child-size screwdriver), this classic building set gives kids all they need to tinker and build! Printed right on the sturdy storage box are building plans for a crane, motorcycle, airplane, and race car to get the fun started. With some imagination and a few creative twists and turns, kids can make hundreds more amazing structures, too! Set includes 12 bolts, 8 nuts, 16 building boards, 6 blocks, screwdriver, and storage box that bes part of the play. Any time kids play with this durable set, they'll be building fine motor skills, problem-solving skills, and hand-eye coordination. Included extension activities guide parents to educational activities that also build early math skills. This building set is an educational gift for kids ages 4 to 6 years. Add the Melissa and Doug Standard Unit Blocks to round out the hands-on play experience and to give kids an engaging option for screen-free fun. For more than 30 years, Melissa and Doug has created beautifully designed imagination- and creativity-sparking products that NBC News called “the gold standard in early childhood play.” We design every toy to the highest quality standards, and to nurture minds and hearts. If your child is not inspired, give us a call and we'll make it right. Our phone number is on every product! Gender: unisex.