Material: Plastic (Nylon)Color: BlackItem: PropellerModel: 5030Length: 5.0 inchScrew Pitch: 3.0 inchCentral Hole Diameter: 5.0mm (Adapters Included for 4mm， 3mm， 2.5mm)Quantity: 8 PairsPropeller Type: CW Propeller and CCW PropellerFor Vehicle Type: For Mini QAV250 RC QuadcopterFuel Source: ElectricFeature:Very strong and light weight.Long lasting and easy to install.Perfect for RC Quadcopter Multi-Copter.Package Content:8 x 5030 Propeller CW Black8 x 5030 Propeller CCW Black16 x Adapters