A security element comprises a fixed member comprising a clamping portion proximate a first end and a coupling portion proximate the second end and defining a slot extending along a slot axis. The slot comprises an interior surface comprising a plurality of recesses. An adjustable member comprises an engagement portion configured to house a portion of the coupling portion of the fixed member. A coupling element is configured to extend between a first coupling opening and a second coupling opening and is configured to couple the adjustable member to the fixed member through the slot, wherein the coupling element is configured to contact at least one of the plurality of recesses in the slot. A barrier is formed between adjacent recesses that is configured to prevent the coupling element from moving along the slot axis.