Customs security seals metallic spiral wire is manufactured on following material
art. SPR.Z galvanized wire........ 1 mm (yield 1 kg = 400 mt)
art. SPR.I stainless steel wire... 1 mm (yeld 1 kg = 400 mt)
art. SPR.O copper wire............ 1 mm (yeld 1 kg = 370 mt)
art. SPR.R brass wire............. 1 mm (yeld 1 kg = 350 mt)
