D3542 (2820) 920KV Brushless Motor for X-UAV Mini Talon Talon X8 FX61 RC Airplane Fixed Wing Glider The 3S is equipped with 10 to 12 inch paddles & the 4S is equipped with 9 to 10 inch paddles. Be sure to take the paddle test before the motor is used normally. It is the same grade as the Langyu X2820, which is made from imported magnets & bearings. Support 4S lithium battery, suitable for popular FX79, big fat, X8, skylark & other large carriers, with power consumption, high efficiency, high cost performance. Description: Item: D3542 (2820) 920KV Brushless Motor Weight: 151g Package Included: 1x D3542 (2820) 920KV Brushless Motor