These are new old stock Teledyne "CentiGrid" type miniature RF relays, DPDT, DC-1 GHz, 5 VDC coil with diode protection across it, a VERY nice part for building switchable attenuators or filter banks, repairing test equipment, etc. These currently sell new for $43.00!I am 1/3 of that! Several are shown, you are buying one at a time. Have fun!