This is a pair of 600mm Sport Aerotech Helicopter Blades for the Century Helicopter Raven 50 (CEHE1061) and the Falcon 50. FEATURES: Constructed of wood and covered in White adhesive backed covering INCLUDES: Two 600mm Sport Aero Helicopter Blades with four Blade Grip sections and four 2x10mm countersunk screws REQUIRES: Attaching Blade Grips and installing on helicopter SPECS: Length: 26" (660mm) Width: 1.9" (49.8mm) Thickness: .31" (8mm)