Haktoys Crash Kit Main Rotor Blades Tail FlyBar Set ATS S735C/HAK738C Large 30" Camera RC Helicopter Package contents: 4 x main rotor blades, 1 x tail blade, 1 x flybar (balance bar), 1 x connect buckles, 2 x main grip set, 4 x screws Compatible with Haktoys ATS S735C/HAK738C IMPORTANT: Upper blades and lower blades are NOT interchangeable