This is the popular F Type twist-on connector for standard 1.00mm satellite cables. It can be used in many domestic and commercial applications and it is designed to stand up to the wear and tear of busy working conditions.
F type back to back coupler connects 2 satellite cables
Satellite F Splitter 2 Way, All ports F-connector, DC feedthrough on all in-outputs
10 - Co-axial Female Cable Couplers , Joins 2 TV lead with Male Plugs