bnc connector 1,material: copper or zinc 2,plating: gold/nickel/tin 3,high quality (ROHS) 4,50OHM,75OHM.cables Features:Bayonet coupling, small ... min. at sea levelVSWRStraight: 1.3 max., R/A: 1.5 max.Straight: 1.3 max., R/A: 1.5 max.Contact ResistanceCenter Contact ... enquiries immediately, you will experience the benefit about it . RF high quality pcb connector