Umshini wokwenza idekhi eyi-1000 waphansi odumile othengiswa emazweni amaningi, ububanzi bekhoyili ngaphambi kokugingqika bungu-1220mm/1000mm.Ngemuva kokugoqa ububanzi bomkhiqizo ngu-1000mm noma 688mm, Impahla evamile i-GI material, ukujiya kwempahla evamile phakathi kuka-0.8-1 mm.