XINTE Metal Carbon CF 6ch Heli Kit ARF for VCTRC 450 PRO V2 RC Helicopter Unassembled Without Canopy and Blades Length: 635mm Height: 230mm Main Rotor Diameter: 700mm Tail Rotor Diameter: 150mm Motor Drive Gear: 12T OR 13T Main Drive Gear: 150T Autorotation Tail Drive Gear: 106T Tail Drive Gear: 25T Drive Gear Ratio: 1:12.5:4.24/1:11.5:4.24 Weight(w/o power system): 450g Accessories: 450PRO Kits Set X 1 set(not contain a main rotor blades and the Canopy)