low profile pierced beam frame 12" wide flange i-beam frame & tongue 3" steel channel crossmembers gooseneck hitch tag hitch available steel channel sides 2-5/16" adjustable height gooseneck coupler and safety chains sealed wiring harness dual 12k rated drop leg jacks 5' self cleaning steel dovetail 2 45" x 57" double spring assist deluxe ramps 11500 lb load rating slipper spring suspension radial tires on steel wheels mud flaps pressure treated lumber decking stake pockets and pipe spools 1/4" steel rub rails 14k models 3/8" steel rub rails 16k & heavier models spare tire mount recessed in neck lockable solid steel storage tray full dot compliant led lighting