The SF-SF50+ is a 50 Ohm SMA female to SMA female coaxial adapter from Mini-Circuits. It operates from DC to 18 GHz with low insertion loss and panel mount bulkhead design.
The 925-106A-51S is an SMPM to SMPM coaxial adapter with jack to jack and female to female contacts, 50 Ohm impedance, and 40 GHz frequency rating. It features a straight, free-hanging (in-line) mounting style with snap-on coupling.