Made of 1/4 inch steel;Bare steel; California Residents: WARNING Did you install an Artec Truss only to later decide you also want a Hydraulic Ram Mount? Here is the kit you need to make that upgrade complete. This Bridge Upgrade Kit is designed to tie an Artec Truss and an Artec Ram Mount when purchased as separate items. Includes the standard Bridge used in the Ram Mount/Truss combos and also includes a weld-on Truss Flange and 7 grade 8 bolts and nuts. All pieces are 1/4 steel, CNC cut and bent. Works with all Artec Dana 60 Front Trusses and Ram Mounts.