5 Sizes: 5 different lengths of 10 cm/ 3.94 inch, 15 cm/ 5.9 inch, 30 cm/ 11.8 inch, 50 cm/ 19.7 inch and 60 cm/ 23.6 inch, each length has 6 pieces servo extension cords Widely Application: These servo extension lead cables are compatible with Futaba and JR servo, plane and helicopter servo connection or receiver connection, remote control car, RC Car 3-Pin Wire Connector Design: These servo extension cable connectors with 3 pins and have an angle in case you will install incorrectly, convenient to use Female to male servo extension cable: featured with female connector on one side and male connector on the other side, can be connected to the receiving set and steering engine Item Quantity: Package come with 30 pieces of female to male servo extension cable wires, enough for you to use on different occasions