Great Planes Extra 300SP .46-.81 Scale Aerobatic 3D EP/GP ARF Airplane FEATURES: Construction: Balsa and ply Wings: Two-piece with aluminum joiner tube Radio Compartment: Plywood reinforced, accessible under canopy INCLUDES: Great Planes Extra 300SP ARF Sport Airplane with wheels, spinner, 2-pc engine mount, two decal sheets, fuel tank, pushrods, all hardware REQUIRES: Radio: 4-5 channel, 4-5 servos : Three standard ball bearing One high torque ball bearing One micro servo