Great Planes Goldberg Anniversary Cub .40-.61 Kit FEATURES: All Balsa and Plywood Construction One-Piece Wing Design INCLUDES: All Balsa and Plywood to complete the kit, Clear Windshield and Side Windows, Detailed Cowl and Engine, Glass-Filled Nylon Engine Mount, Cub REQUIRES: Engine: .40-.61 (2-stroke) or .70-.90 (4-stroke) Radio: 4 Channel (ailerons, elevator, rudder, throttle) Servos: 4 Standard Covering: Two 6