90 width leaf spring American suspension Semi trailer tri axle suspension American type trailer parts : H(mm) Hanger thickness Leaf Spring Equalizer Thickness Cpacity(T) 235 6/8mm 90*16/13*7/8/9 8/10/12mm 16*3 255 6/8mm 90*16/13*7/8/9 8/10/12mm 16*3 275 6/8mm 90*16/13*7/8/9 8/10/12mm 16*3 305 6/8mm 90*16/13*7/8/9 8/10/12mm 16*3 325 6/8mm 90*16/13*7/8/9 8/10/12mm 16*3