FORD LTLA9000 AERO MAX 120 Step  FREIGHTLINER CASCADIA Step
   FREIGHTLINER COLUMBIA 120 Step  HINO 338 Step
   INTERNATIONAL LT625 Step  INTERNATIONAL Prostar Step
   KENWORTH T800 Step  MACK CXN613 Step
   PETERBILT Step  PETERBILT 379 Step
   PETERBILT 388 Step  VOLVO Step
   VOLVO VNL Step  VOLVO VNL200 Step
   WESTERN STAR TR Step