Amazon.com: Male to Male Coax Connector, 2-Pack 75 Ohm F Type RG6 Coaxial Cable Adapter, Cable Extension Coupler for TV, Antenna, Splitter, Amplifier : Electronics
Utilitech Single To Single Silver Basic Standard Adapter in the Adapters & Splitters department at Lowes.com
Bingfu F Type Male to Female Right Angle RG6 Coaxial Cable Connector Adapter (5-Pack) for Television TV Antenna CATV Digital Vedio Audio Coax Extension Cable - Walmart.com