8pcs GemFan 5045 (5.0 x 4.5) Tri-Blade Propellers. FreyBlue. Glass Fiber Nylon. GemFan 5045 3-Blade Propellers. Material: Glass Reinforced Plastic/Nylon Hubs: 5mm, Shape: Normal Includes: 4 CW Frey Blue and 4 CCW Frey Blue Authorized GemFan Retailer. Direct from Factory.