SPnT R591
Radiall's subminiature R591 coaxial SP4T & SP6T (Single Pole 4 Throws and 6 Throws) switches have a typical operating life exceeding 25 million cycles, providing excellent RF performance, repeatability, and a guaranteed life of 10 million cycles. These switches are fitted with SMA (up to 26.5 GHz), SMA2.9 (up to 40 GHz) connectors.
They are also the smallest on the market place.