Irctek 2 pairs 4pcs high performance FPV 5040 6 blade propeller CW CCW for QAV 200 210 230 250 280 320 RC Quadcopter frame - Green Model: 5040 Material: PC mounting diameter: 5mm Used for fpv qav 180 200 250 etc RC Quadcopter frame Package include: 4pcs2CW+2CCWgreen propellers