Barb Wire Gaucho 15.5g 4 pt.For fencing applications that require both strength and cost effectiveness, high tensile 15. 5 g Gaucho barbed wire is the answer. Built using a higher percentage of steel than traditional low carbon wire, high tensile 15. 5 g Gaucho barbed wire delivers a stronger product using a more compact, smaller diameter wire. Stronger wire means less sagging and enhanced fence memory and eliminates the need for pre stretching. It also means fewer posts due to