DAL 12 Pair 5040 2 Blade PC+ Glass Fiber Propeller Prop for DIY FPV Racing 210mm to 310mm Drones Quadcopter Multirotor like Robocat 270 QAV250 ZMR210 QAV210 5 inch propeller,suit for mini 210-310mm FPV racing quadcopter like QAV210 ZMR210 QAV250 Robocat 270 Almost unbreakable, high quality PC + glass fiber material, inner hole area much thickerer,outstands other 5 inch propeller in market Different color: black green red orange purple,gives you colorful flight 5mm inner hole,0.085oz(2.42g)per PCS Ship to USA VIA USPS first class priority mail, delivery date 5-10 days