High Security bolt seal with ABS covered and "H" stamped at the bottom is a special locking device. It can be used on shipping container, truck and trailer doors and where high security tampering evidence is required. Various colors to choose. C-TPAT ISO 17712:2013 Compliant. Meets US Customs nd Border container seal requirements. Please contact us for free samples. -Anti-spin design inhibits tampering as the mating “female” part of the seal by spinning it at high speed. -Laser printing -Sequential numbering -Bar-coded