... 2)Size:Small & Big size 3)Type:Type:Conventional,Parabolic, Z-type,Galvanized Z Leaf spring1)Marerial:SUP7,SUP9,SUP9A,SUP10,SUP11 ... ,SUP11A;2)Type:Conventional,Parabolic,Z-type,Galvanized,Boat ... .TINMY Leaf springs for all kind of trucks, trailers, buses, cars, 4wd, and light commercial vehicles... 90X38 Z type Leaf spring ...