Galvanized Barb Wire Extension Pressed steel one/two piece line arm Hot dipped galvanized ASTM 1-7/8"x1-5/8", ... "x1.5/8 Galvanized Barb Wire Extension We company supply various fencing fittings, including barb wire arm, post cap, sleeve, tension band ... to Canada, USA, Mexico and Middle East,etc. Bab wire extension arm is one of the most popular fittings. Material: pressed-steelSurface ...