The 5129 from Aeroflex - Inmet is a Between Series Coaxial Adapter with Frequency 18000 MHz. More details for 5129 can be seen below.
Low PIM 7/16 DIN Female to SMA Female Low Adapter read more
The AD-1418-301 from Vida RF is a QMA - male to SMA - female between series adapter. It operates from DC to 6 GHz and has a VSWR of 1.20:1. It has beryllium co... read more
The 716J-SMP-SLP from HASCO Components is a Between Series Coaxial Adapter with Frequency DC to 6 GHz, PIM Less than -160 dBc (at 1800 MHz, 43dBm per tone).