Yosoo 2 Pair Anti-Clockwise Clockwise (CW / CCW) Main Motor Set Replacement Spare Part for MJX X-SERIES X400, X500 RC Quadcopter Pack of 4 Durable, practical and not easy to damage Practical and easy to use Convenient to replace and install With stable performance, it is a very economical item Package included: 2 x Clockwise Motor, 2 x Anti-clockwise Motor