120 S2 RTF with SAFEBlade 120 S2 RC Helicopter Overview Break through the heli learning barrier with the Blade 120 S2. Featuring the proven durability of the 120 S platform with updated flight characteristics and integrated telemetry, the 120 S2 is a great way to graduate from coaxial helis and multirotor drones to a single rotor machine. Easily one of the best fixed pitch heli models on the market, it's perfect for beginner RC pilots and will attract seasoned pilots