An authentic 7.75 long replica of the John Deere 9Rt series tractor this model comes with real metal parts and features working treads. Encourages development of science technology engineering and math (STEM) skills. Manufacturered by Meccano. Meccanos John Deere 9Rt series is recommended for kids aged 10+. 2 Real tools included. Intermediate complexity level. Build time of 1-3 hours. No batteries required. Includes: 278 parts 2 real tools 1 sticker sheet 1 instruction sheet for 1 Model Erector set lets kids create a model tractor while exploring real applied engineering skills.