Great Planes PT-40 MKII Trainer Plane Kit FEATURES: Stable, self-correcting flight characteristics Precision-cut, interlocking parts naturally assemble straight and strong INCLUDES: Adjustable engine mount, 3/16 landing gear, pushrods, full-size rolled plans, illustrated instructions, all balsa and plywood to build REQUIRES: Radio: 4-channel w/3-4 servos Engine: .35-.46 (2-stroke) or .40-.52 (4-stroke) Misc. items: fuel tank, wheels, wheel collars