Ⅰ.Leaf Spring Quick details 1ProductNameleaf spring2TypeConventional LF, Parabolic LF, Z type LF3MaterialSUP7,SUP9,SUP9A,SUP11 and SUP11A are available.4 SizeThickness, from 6mm to 56mm;Width, from 44.5 to 150mm5ColorBlack or you required6UsageMAN,BENZ,SCANIA,VOLVO,HINO,TOYOTA,NISSAN,DAF,HOWO,CIMC,BPW7Certificate ..