Each cable length: about 15cm. Connectors: 3-pin male to female. These are simple jumper wires used on standard 0.1" breakaway headers. Great for jumping from board to board or just about anything else. Used for RC Car, plane and helicopter servo connection or receiver connection. Color: Black, white and red. as shown in the pictures. Material: durable hard plastic,high quality. 20 pieces of the 15cm 3-pin male to female servo extension cables in one set will be sold together.