Steelcraft 202120 1999-2017 Chevy Silverado/GMC Sierra Extended & Double CAB LD/HD 1500/2500/3500 3" SIDEBARS Black (Body Mount) Side Step Nerf Bar Running Board 3" 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 Custom Carbon Steel Mounting Brackets High-Strength Carbon Steel Construction