Features 1、CNC Machined Aluminum Cover: With CNC machined aluminum front and rear covers, reliable performance, sturdy, durable and long service life. 2、High Purity Copper Coils: QA4220 brushless motor adopts high purity and high temperature resistant copper coils which effectively provide efficiency. 3、Output Shaft and Bearing: High toughness stainless steel output shaft and high accuracy high quality bearings make the motor super durable. 4、Balanced Rotor: Precisely balanced rotor for smoothness, providing high reliability and maximum speed. Motor size is 42.3x42.5mm/1.665x1.673in. 5、Applicable Model: QA4220 650KV brushless motor is suitable for remote control airplane fixed wing, can effectively improve RC airplane performance. Specification Item Type: QA4220 650KV Brushless Motor Material: Aluminum Alloy + Copper + Stainless Steel Speed: 650KV Configuration: 12N 14P Motor Size (Diaxl): Approx. 42.3x42.5mm / 1.665x1.673in Number of Lithium Batteries: 3-6S Maximum Continuous Power/10 Seconds (W)/10S: 2000W Maximum Continuous Current (A)/10S/10 Seconds: 80A Appliction: for Remote Control Airplane Fixed Wing Color: As Pictures Shown Weight: Approx. 345g / 12.2oz Package List 1 x Motor 8 x Screw 2 x Accessories 3 x Banana Head Female 1 x Nut 3 x Rubber Sleeve 1 x Manual