755-129-9 a right angled, male BNC plug with a frequency of 4GHz. Voltage rating is 500Vrms and nominal impedance of 50Ω. Gasket is made of silicone rubber; insulator is teflon; outer/angled contact is berrylium copper; k-grip sleeve is commercial bronze; all other metal parts are brass. Center contact is in hard gold plating finish while all other metal parts are Silver plated. The product is small and lightweight and features a quick connect and disconnect bayonet coupling design.