This H1 system is compatible with the RAM Promasted City 2015-newer (all models). The ladder rack fastens onto existing mounting points , with no drilling required. Mounting bases have eyehooks to use for easy tie downs. 14 gauge steel post & crossbars and 11 gauge mounting bases provide a heavy duty and economical system. Mounting bases are welded complete onto upright post for water tight seal. Ladder racks have an anti-rust interior and powder coated for extra protection. System includes 1x ladder stopper, 1x ladder guide and 1x hook & loop strap.