10x4.5 1045 Carbon Fiber Propeller Blade CW CCW Props for RC Drone. Features:Name: Propeller 1045 carbon fiber propellerDiameter: 10 inchPitch: 4.5Colour: BlackPaddle Length: 25.4CMCenter hole front aperture: 6MMCenter hole back aperture: 9MMCenter seat thickness: 6MMWasher ring  available for motor mount  or shaft 6mm 5mm Weight: 12gPackage includes:1Pair Carbon Fiber 1045 Propeller1ccw 1cw total 2 pcs1Set Comes With 5mm And 6mm Aluminium Ring