... can use anchors fixed on the wall, fencing, gates, buildings or metal guardrails, 4. Characteristics: low cost, easy installation, high protective ... called razor spike. Steel2mm toughened steel Coating Hot dipped galvanized or dpdyester power coated(optional extra) ,stainless steel Spike length64--100mmStandard ... .8mSpikes per meter 20 galvanized window security wall spikes(facotry)ISO 9001