Steelcraft STX300 Running Boards are designed for years ofservice in any environment. Round bullnose trim around the face of the runningboard provides a clean appearance. Aircraft grade aluminum extrusion providesthe ultimate vitality and durability. The decorative 304 Stainless steel centerpanel adds a clean dividing line between front and rear cabs. A 4.5" widestep with injection molded textured step platforms offer complete safety forentry and exit.