BKL-Adaptor-75-Ohm-Teflon-1-6-5-6mm-Plug-to-1-6-5-6mm-Plug-BKL-415400-p-This-BKL-Electronics-adaptor-has-two-male-connectors-with-M9P0-5-threads-for-1-6mm-x-5-6mm-female-conectors-&-frequencies-up-to-4 G Hz-The-body-is-nickel-plated-brass-with-gold-plated-contacts-75-Ohm-impedance-p-BKL-0415400-Adaptor-75-Ohm-Teflon-1-6-5-6mm-Plug-to-1-6-5-6mm-Plug