Zenoah 231H Engine with muffler and air filter. Carbon fiber frame SE includes: Rotortech 700 main blades, 115 tail blades, Carbon fiber boom supports, Thrust bearings top & bottom of main shaft, Double upper radial mainshaft bearings, Carbon cut out 3D fins, Head button & new HD spraque type autorotation unit. Specifications: Main Blades: 700mm Main Rotor Span: 61.4in Tail Rotor Span: 10.5in Overall Length: 55.7in Height: 18in