ROHN’s R-45AG 45G top section features the same 18 in face and 7/16 in solid serpentine zig-zag bracing as the standard 45G tower sections and it also comes with a tapered top and integrated 2 in OD x 12 in mounting pipe and set screw. Both ends of the mounting pipe are open but can accept Rohn thrust bearings R-TB-50 and R-TB75.BRBRYou can connect the 9 ft long R-45AG to any standard Rohn 45G tower section using the included bolts and double-bolted leg connections. The entire section has been completely hot-dip galvanized for years of worry-free corrosion protection and it can be used in guyed, self-supporting and bracketed tower configurations.