This is one 30cm (12") female universal servo lead from ProTek R/C. These are excellent servo leads made with thick, high quality 22awg wire for maximum current carrying capacity and strength. The female plug installed on these extension leads are Futaba style connectors and will work any radio system. When plugging JR style connectors into a Futaba female connector, be sure to check for the correct polarity.
ProTek R/C is an AMain Sports & Hobbies brand.