Screw the small metal coupler onto the end of your existing cable by hand. Turn it clockwise until it is snug.
Look for the Rocketfish Coaxial Cable Couplers (2-pack). These are gold-plated for better corrosion resistance and signal transfer. coaxial cable extender best buy
If you are working in a tight space behind a cabinet, the Rocketfish 90-degree Coax Adapter prevents cable damage from sharp bends. How to Extend Your Cable Properly Screw the small metal coupler onto the end