This is a Expert Electronics 6" Standard Y-Harness with Reverser from Expert Electronics. This cable features a "reverser" that reverses the pulses to one servo so it will go backwards. This is useful in landing gear or flap applications when you only need to reverse the direction of one servo. These are made with thick, high quality wire for maximum current carrying capacity and strength. The standard plugs on these are similar to the JR and Airtronics Z connectors, and will work with any radio system. The female end is designed to also accept Futaba connectors, as well as JR, Aitronics and HiTec connectors.