STEELCRAFT 402117 99-13 CHEVY SILVERADO / GMC SIERRA Extended CAB 4" OVAL SIDE BARS Stainless SteelSide Step Nerf Bar Running Board 4" Round heavy-wall tube design, sold in pairs with installation hardware included Fast and easy, no Drill Installation Custom Polyethlene Step Pads for lasting protection against wear and tear High Quality 304 Polished Stainless Construction. Limited lifetime warranty Custom Carbon Steel Mounting Brackets