WLtoys K127 Helicopter 2.4G 4CH 6-Aixs Gyroscope Hover Mini RC Helicopter RTF. Wltoys XK K110S 6CH 3D 6G System Single Paddle Brushless RC Helicopter Aircraft. Product: K170 (Black Hawk UH-60L). Wltoys XK K123 6CH 3D 6G System Brushless Motor RC Helicopter With Transmitter.