Veetron offers 300mm Long Dynamic Trolley for Scientific and Laboratory Use. Veetron is an ISO 9001:2000 certified company. 300mm Long Dynamic Trolley for Scientific and Laboratory Use with metal reinforced at ends, having three low- loss ball-bearing wheels and fitted with spring-loaded impulse rod. 300mm Long Dynamic Trolley for Scientific and Laboratory Use is of weight approximately 1kg. The rod has three positions to provide different impulses and is triggered by a release pin. With removable metal pins at each end to enable trolleys or masses to be stacked or to provide anchoring points for accelerating cords.