You’re going to build an invention! The Da Vinci Helicopter with the ROKR mechanical building set.

Okay, nerd mode on: Leonardo da Vinci was already drawing awesome helicopters when they were as impossible as time travel is now. But ROKR thought: challenge accepted! And so here’s your very own Da Vinci Helicopter. The machine is full of moving parts: pistons that pump as if trying to wake up, rotors that spin merrily, a 2-blade propeller that pushes the wind away… Everything is powered by a 6-cylinder engine and an industrial conveyor belt that keeps everything perfectly synchronized. Complete with a red-orange LED glow and a steam shaft. Pure steampunk energy.