DYNAMICS TROLLEYS A PAIR OF IDENTICAL WOODEN TROLLEYS ( 300 MM LONG ) MOUNTED ON THREE WHEELS. A SPRING LOADED ROD IS FITTED TO GIVE IMPULSE WHEN RELEASED. IT HAS A PROVISION FOR STACKING THE TROLLEYS ON TOP OF EACH OTHER WITH REMOVABLE PINS.COMPLETE WITH 3 ELASTIC CORDS , 3 SPRINGS , 8 PINS ( FOR STACKING ), 2 RUBBER CORKS , 2 NEEDLES & 1 RELEASING PIN.A WOODEN TRACK 2 METER LONG COLLAPSABLE .THE TRACK PROVIDES AN EASILY INCLINABLE SMOOTH SURFACE . Qty :