Features: 2 Pcs Prop 6045 6x4.5 Black Propeller Props CW CCW For Quadcopter QAV250 Specifications: Material: ABS Length: 15.3 cm/6.0" Hub ID dia: 5mm Hub OD dia: 13.5mm Hub thickness: 6mm Color:black Package included: 1 pcs CW (Reverse) 1 pcs CCW (Normal) 2 x Adapters