BIRUGEAR Gold Plated BNC Female to Female Adaptor Coaxial Adapter + Cup Pad Coaxial Extension Coaxial interface conversion Our broad selection of in stock within series couplers is sure to solve all your connection problems Covering all the most common 50 and 75 Ohm coaxial interfaces including BNC, Type F, Mini UHF, Type N, RCA, SMA, TNC and UHF Utilize our easy to use Product Finder to select the within series coupler that is right for your application