... steel one/two piece line arm Hot dipped galvanized ASTM 1-7/8"x1-5/8",2 ... -3/8"x1.5/8 Galvanized Barb Wire ExtensionWe company supply various fencing fittings, ... barb wire arm, post cap, sleeve, tension band, brace band, wire strainer, short windiong bracket, turn buckle, rain ... popular fittings. Material: pressed-steelSurface treatment: hot dipped galvanized up to ASTMWall thickness: 1.5, 1.8, ...