Missouri Wind Raptor Generation 4 Carbon Fiber Blade Designed for high-speed, high-efficiency, affordability and durability Made to withstand extreme heat and sub-zero temps, and can last 75 years in the sun Rated to withstand 125 mph winds and designed to operate real PMA&#039;s at high speed in low winds Aerodynamically tapered blades feature a 5.5 mph start up speed Blades weigh approximately 1 pound each Weighed for density Perfectly balanced Ran to strict specifications and procedures Reinforced and impact resistant Cooled to avoid warping QC gauged 100% for size Inspected for flaws and appearance at three points Resistant to ultraviolet light (UV protected)! Will NEVER crack or degrade Clockwise rotation Each blade is 29&#034; long Blade base is 6&#034; wide Blade tip is 1 1/8&#034; wide Mounting bolt holes are 0.245&#034; and the bolt holes are 15/16&#034; apart center to center