16" TO 19" Vertical height adjustment. 6,000 lb. max. pin weight. 24,000 lb max. gross trailer weightFITS: 2003 - 2013 Chevy 2500 & 3500, Long Bed Trucks2003 - 2012 Dodge 2500 & 3500, Long Bed Trucks (does not fit 3500 w/overload springs)1999 - 2013 Ford F250 & F350, Long Bed Trucks