These precision 3.5mm adapters are low VSWR, low loss devices that operate from DC to 34 GHz. Models 8021A2, B2 and C2 offer combinations for in-series adapting and are phase matched, making them ideal for use in precision measurement applications. These adapers are minimum length and feature a square-flanged body for ease of connecting that also prevents them from rolling off flat surfaces. They are useful as “test port savers” when used with network analyzers.