This propeller is made of high quality carbon fiber， which is extremely lightweight and durable and it is just designed for electric Devil 420 FAST helicopter. You can expect anincrease in overall motor efficiency with this excellent propeller.<br /><br style="font-size: 13.3333px;" /><img alt="" src="//www.guphotos.com/images/uploads/RM8439-1.jpg" style="font-size: 13.3333px;" /><br style="font-size: 13.3333px;" /><img alt="" src="//www.guphotos.com/images/uploads/RM8439-2.jpg" style="font-size: 13.3333px; width: 800px; height: 495px;" /><br />Features:<br />High quality and lightweight.<br />Use 3K carbon fiber material， and unique forming technique， improve anti-twist， suitable for extreme 3D flight.<br />Special shape design， improve the flight performance more effectively.<br />Compatible with Devil 420 FAST.<br /><br />Specifications:<br />Shape: Symmetrical wing<br />Size: About 430mm * 33~36mm<br />Thickness: 5mm<br />Material: Carbon Fiber<br />Shaft hole diameter: 3mm<br />Product weight: About 91.5g/1 pair<br /><br />Package information:<br />Package size: 43 * 5 * 1.5cm / 16.9 * 1.96 * 0.59in<br />Package weight: 97g / 3.4oz<br />Poly bag package<br /><br />Package list:<br />1 * Pair Carbon fiber 420mm Main Blades<br><img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/9/RM8439/RM8439-1-db7b-zNsa.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/9/RM8439/RM8439-1-db7b-w8gS.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/9/RM8439/RM8439-1-db7b-EAx7.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/9/RM8439/RM8439-1-db7b-wAcV.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/9/RM8439/RM8439-1-db7b-igXQ.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/9/RM8439/RM8439-1-db7b-dJRj.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/9/RM8439/RM8439-1-db7b-bsTn.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/9/RM8439/RM8439-1-db7b-ySjX.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/9/RM8439/RM8439-1-db7b-3qpn.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/R/9/RM8439/RM8439-1-db7b-6AwB.jpg" /><br>