Durability, functionality, fun and safety are particularly important to KETTLER. With a legacy of over 60 years in manufacturing top quality outdoor toys KETTLER products last the test of time. In every step of the manufacturing process, design, materials, production, finish, etc. KETTLER only selects the best. KETTLER products are engineered in Germany with unique patented features that ensure the safety of children. Everything KETTLER produces surpasses stringent European testing and standards. The Hay Wagon Accessory is made to attach to all KETTLER tractors, New Holland Pedal Tractor 036219, Cat Kid Tractor with Trailer 023288 and Cat Front Loader with Backhoe 813001 (all sold separately). It features rugged blow molded chassis, durable resin components, 10mm steel axle and auto lock with release lever.