3" x 1-5/8" 3 Strand 45-Degree Galvanized Barbed Wire Arm for Chain Link FencesFences topped by barbed wire remains a common installation at power plants, police stations, correctional facilities, and other venues needing high security! For fences that use 3" line posts and 1 5 8" top rails, look no further than this steel 3 strand barb arm! Fits atop your post, with a circular hole to accommodate your fence rails! This arm has been fabricated with an angular build, this way the barb wires project outward from the top of the