1.available in electrical galvanized finish 2.one hole,1.5mm thickness 3.surface with polishing 4.we are manufacturer Rigid Strap-one HoleModelSIZEDESCRIPTIONSP301/2"steel,one hole,1.5mm thicknessSP313/4"steel,one hole,1.5mm thicknessSP321"steel,one hole,2.0mm thicknessSP331-1/4"steel,one hole,2.5mm thicknessSP341-1/2"steel,one hole,2.5mm thickness other series available! rigid strap-one hole