Coaxial adapters of this series are designed for the connection of microwave devices operating in a 7.0/3.04 mm tract with ones in a 3.5/1.52 mm tract in a frequency band of 0...18 GHz. The adapters can have either «male-male», «female-female» or «male-female» connectors type with inch or metric thread. Connectors body and screws are made of stainless steel. Central conductors are made of tempered beryllium copper and have wearproof gold coating. Applied insulant has a low dielectric conductivity and high durability. On a special request, the adapters can be modified for operating temperature up to +110 °C.