FORD LN8000 Step  FREIGHTLINER CASCADIA Step
   FREIGHTLINER CASCADIA 125 Step  FREIGHTLINER CENTURY CLASS 120 Step
   FREIGHTLINER CLASSIC XL Step  FREIGHTLINER COLUMBIA Step
   FREIGHTLINER COLUMBIA 120 Step  FREIGHTLINER FLD/CLASSIC Step
   FREIGHTLINER FLD120 Step  FREIGHTLINER M2 Step
   FREIGHTLINER M2 106 Step  INTERNATIONAL 4400 Step
   INTERNATIONAL 9200 Step  INTERNATIONAL PROSTAR Step
   INTERNATIONAL TERRASTAR Step  PETERBILT 379 Step
   PETERBILT 385 Step  VOLVO VNL Step