These 1.85mm coaxial adapters, straight & right angle, will mate with 2.4, but not sma, 2.92, or 3.5 which use english threads. The Frequency of 1.85mm adapters is either 65 or 67ghz; standards committees just switched to 67ghz. 1.85mm adapters fill the frequency gap between 2.4's & 1.0's. The 1.85 connector is sometimes referred to as a "V" connector. Hex size is 5/16, the same as many other precision connectors. 1.85mm to 1.85mm adapters are usefull as connector savers & hooking up different 1.85 systems. The Right Angle 1.85mm adapters featire a mitered constyruction, & operate bto 67ghz
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