Traxxas LaTrax Alias Quadcopter 8 GREEN & BLACK ROTOR BLADE Screws Propeller Four (4) Green Rotor Blades (Part # 6631 x 2) Four (4) Black Rotor Blades (Part # 6626 x 2) Four (4) 1.6x5mm Button Head Machine Screws (Part # 6643 Partial) Includes: 2 Rotor Blade Set-Black (Part # 6626 x 2) 2 Rotor Blade Set-Green (Part # 6631 x 2) Part number(s) included (in factory packaging): 6626 6631