Features: 1.With plastic gear,light weigt. 2.Completely compatible for KY101 HJ14 LF608 S28 RC Quadcopter,high quality as original. 3.Wire colors match original, making replacement easy. 4.Easy to install and convenient to use. 5.4 pcs coreless motors a set, included 2 clockwise motor( red and blue wires ) and 2 anti-clockwise Motor( black and white wires ). Descriptions: 1.The coreless motor is suitable for micro four axis aircraft or miniature glider. Specifications: Material: Plastic Color: Red-blue wires,Black-white wires Size: 2.5x0.5x0.5cm Voltage: 3.7V Rotating speed: 4000r/min Quantity: 4 pcs (2 CW and 2 CCW) Package Informations: Package Size: 7x10x1cm/2.75x3.93x0.39in Package Weight:6g/0.21oz Polybag Package Package Included: 2 x Clockwise Coreless Motors 2 x Anti-clockwise Coreless Motors Notes: 1.Due to the difference between different monitors,the picture may not reflect the actual color of the item. 2.Due to the manual measurement and different measurement methods, please allow 1-3cm deviation. Thanks!