Dynamics Trolley, Wooden (Pair)

This pair of identical wooden trolleys 300 mm long, mounted on 3 wheels. A spring loaded rod is fitted to give impulse when released and have 5 slots for different level of spring compression. It has a provision for stacking the trolleys on top of each other with removable pins. Supplied complete with springs, 4 pins (for stacking) and 2 rubber corks.