Using the 3K pure carbon fiber woven cloth， by high temperature high pressure precast precision machining， hardness is higher than that of conventional products market， each pair of all carbon fiber and propeller were treated by artificial balancing static and dynamic equilibrium.<br /><br />Description:<br />Item No: UL35900X2<br />Item name: 9030 carbon fiber propeller <br />Pitch: 3.0<br />Main hole diameter: 4mm<br />Center to center distance: 12mm<br />Quantity: 2 pairs (2xCW， 2xCCW)<br />Usage: for 330 400 450 Mini Quadcopter<br /> <br />Package included:<br />2 x CW propeller<br />2 x CCW propeller<br /><img src="http://img6.eachbuyer.com/x9/p100/cg747_1.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cg747_2.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cg747_3.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cg747_4.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cg747_5.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cg747_6.jpg" />                                                        <img src="http://img6.eachbuyer.com/x9/p100/cg747_7.jpg" />