The Melissa & Doug Construction Building Set In A Box Gives Kids All They Need To Start Building .Features Building Plans For A Crane, Motorcycle, Airplane And Race Car To Get The Action Going .Illustrated Guides Show How To Create Amazing Structures .Comes With An Extension Activities Guide For Parents To Help Kids Build Early Math Skills .Set Includes 12 Bolts, 8 Nuts, 16 Building Boards, 6 Blocks, A Screwdriver And A Storage Box .