Product Type-- BNC female crimp connector 10PCS,it connects with BNC male and the cable. Low Loss-- The attenuates signal of this BNC female connector is 0.15db. Its inner pin is brass gold plated ,outer shell copper nickle plated,which can prevent the connector from being oxidized,and the material of its insulator is Teflon (PTFE) .All of these are for an higher signal transmission and extremely low signal loss. Low SWR-- The SWR of BNC connector is less than 1.2.It is best for uninterrupted transfer of signals while reducing signal loss over large distances and higher frequency use. Free Choice-- Use this BNC female crimp connector to choose your desired cable length,all you need is the correct type of cable. Application-- This BNC connector can be used on many types of coaxial cable. It fits for RG58 cable,RG142 cable,RG400 cable and KSR195 cable.