This F81 barrel splice connector connects two coaxial cables together to extend the length of your cable tv internet connection cable Acting as an adaptor on a video or satellite box to convert a coaxial male output into a a coaxial female output Support high frequency 3 GHz, better video viewing experience than 1 Ghz coaxial connector Easy to install and remove, ideal for DirectTV and Dish Networks up to 3 GHz Achieves high-quality return loss and insertion loss specifications, when compared to conventional F81 connectors