Details: actual cut section model of differential gear box - (actual cut section model of differential gear box mounted on steel frame showing details of all components (such as crown wheel, crown pinion, cage, sun gears, planet gears, split-rear axles, etc) for demonstration purpose. crown pinion must be fitted with a handle.) actual cut section model of 3:1 speed type synchromesh gear box-(actual cut section model of 3:1 speed synchromesh gear bo x mounted on steel frame showing details of all components (such as clutch shaft, clutch shaft gear, main shaft, main shaft gears, synchronizing units, lay shaft, lay shaft gears reverse speed gear, idle gear, gear lever, selector rod, selector fork, slider, etc) for demonstration of various output speed. clutch shaft must be fitted with a handle.) actual cut section model of steering system of a four wheeler vehicle-(actual cut section model of rack & pinion type steering system of a four wheeler light duty vehicle mounted on steel frame showing de