The R-9A has two RG-59A/U leads and is used for dual antenna installations. All ends are terminated with rubber booted PL-259 connectors. Check these features:Stranded center conductor to maximize flexibility and prevent untimely breakage. Shielding coverage that averages 95% to protect against RF leaks and interferrence. Polyvinyl center insulation for ruggedness and longivity. This cable is designed to be used with our K-4A or R-4A antenna studs and any mount that uses either of these SO-239 stud mounts