Rolly Kid Case CVX 1170 Specification.. This tractor has a three position adjustable seat. For ages 3 plus. Rear excavator not included but can be purchased separately see 40/932/7 Mechanical features include a strong 12mm thick rear axle, covered integral fixed wheel chain drive, a pedal crank with eccentric bearing chain tensioning system and anti slip pedals,and a heavy duty front axle with suspension.