The Blade 120 SR is a fixed-pitch heli that will give you the confidence to master the basics of single-rotor flight. Its unique rotor head was specifically designed to provide the inherent stability of a coaxial helicopter, but provide the agile control of a single rotor helicopter. Modeled after the popular ultra micro-sized Blade mSR, the sub-micro-sized 120 SR is larger, faster, and more powerful -- which makes outdoor flight a reality.