Feature: 1. Aluminum Covers and Copper Coils: CNC machined aluminum front and rear covers. High purity and high temperature resistant copper coils effectively provide high efficiency. 2. Output Shaft and Bearing: The motor uses high toughness stainless steel output shaft, high accuracy high quality bearings make the motor super durability. 3. Balanced Rotor: Precisely balanced rotor, providing high smoothness, reliability and maximum speed. And the motor size is 42.3x42.5mm / 1.665x1.673in. 4. Applicable Model: QA4220 450KV brushless motor is suitable for RC airplane fixed wing, can effectively improve the performance of your RC airplane. 5. Product Parameter: Maximum continuous power/10 seconds(W)/10S is 1100W, maximum continuous current(A)/10S/10 seconds is 60A. Specification: Item Type: QA4220 450KV Brushless Motor Material: Aluminum Alloy + Copper + Stainless Steel Speed: 450KV 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. 346g / 12.2oz. Package List: 1 x Motor8 x Screw2 x Accessories3 x Banana Head Female1 x Nut3 x Rubber Sleeve1 x Manual Note: 1. Please allow 1‑3mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.