anti climb fence specifications:
"358" comes from its measurements 3" x 0.5" x 8 gauges which equates to approx. 
76.2mm x 12.7mm x 4mm (Length x height x Diameter) in metric.
358 security fences are extremely difficult to penetrate, with the small mesh aperture being effectively finger proof, and extremely difficult to attack using conventional hand tools. 
358 fences are recognized as one of the most difficult to break through the barrier, because it is difficult to climb. It is called security fencing and high- strength fencing. 
358 security fence panel can be bent in part to enhance the aesthetic effect.