BINGFU SMA Male to SMA Female Bulkhead Mount RG174 Antenna Extension Cable, 3m. I purchased this for extending a security camera antenna, but I bought the wrong type, so it's unopened and unused (new). Cable: RG174 coaxial cable / Length: 3m Bulkhead Mount: 50Ω connector Please note that SMA has the pin and hole arrangement reversed compared to RP-SMA and the bulkhead center. (The 6th photo shows the same shape as the product for sale.)