This standard TRB plug is equipped with a bend-relief spring. The spring allows cable to gently hang at a wider angle, and reduces stress on the assembly. This plug features the standard bayonet design, which acts to lock connection between both center pin/socket and intermediate cylindrical contacts. This design can withstand severe shocks and vibrations. The -231 model is designed to use 30-02003 or TWC-78-1 twinaxial cable for Lab or similar use. It is RoHS compliant.