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