Feature:<br>100% Brand New.<br>High torque &amp; high efficiency. The overall efficiency exceed 90 percent.<br>Low heat production, long lifetime, strong overload protection and it can function 95% of its features without any heat sink appliance.<br>High quality materials adopted: high intense aluminum alloy anodizing shell , front &amp; back cover , high-performance temperature-resistant magnetic steel and imported high-speed bearing.<br>High quality and durable in use.<br><br>Specifications:<br><br>Package size: 10 * 8 * 8 cm / 4 * 3.2 * 3.2 in<br>Package weight: 144 g / 5.1 oz<br><br>Package list:<br>1 * 2845 3000KV Sensorless Brushless Motor