- Highly detailed plastic pieces molded in crean, brown and black.
- Replica of da Vinci's Aerial Screw design, a forerunner to th modern helicopter.
- Structurally unable to fly, da Vinci's design stimulated curiosti about the possibility of vertical flight.
- Mechanical spring controls rotation and vertical movement of th fuselage.
- No glue or paint required.
- Illustrated instructions.