1503 1/2A3-2T Mini Engine (4) vehicle-ship Eliminates the transmission slipper assembly

Eliminates the transmission slipper assembly to transmit all power to wheels without slip

This marble run product combines the beauty of science and machines with many small gadgets

Suspension Heavy duty suspension arms

4GHz Radio & TSM® (Model# 67086-4)

nonmagnetic axles and AccuMate(R) magnetic knuckle couplers

1503 1/2A3-2T Mini Engine (4) vehicle-ship Eliminates the transmission slipper assemblyOverview The Estes 1 2A3 2T engine is single stage engine designed for model rocket flight. This engine is a mini engine designed for flights in lightweight rockets. Each package includes 4 engines, 4 starters and 4 starter plugs.