Magic Rail Twirl. Retro Magic Rail Twirler is a classic magnetic motion skill toy designed to challenge coordination and inspire scientific curiosity. Features a 9-inch metal wire frame with a plastic handle base and a 2-inch diameter plastic wheel containing a built-in magnet. How It Works: Magnets keep the wheel adhered to the metal track. By tilting, flipping, or flicking the wrist to change the angle of the metal frame, the wheel spins and glides back and forth along the rail.
