Hobbylane Nylon Propellers Prop Blades Set A+B for YUNEEC Q500+ Q500 Q500M Typhoon Series 4K RC Quadcopter Drone Spare Replace Parts 2CW 2CCW Rotor Blades, Black, Pair of 2 Durable and lightweight, a must for beginners and junior users Keep your q500,q500+ or q500 4k looking and functioning with style using this complete set of rotor blades No tools required, self-tightening design, simply rotate the propellers by hand to attach or detach Works as a backup, a replacement, or an upgrade