Ionic 3" Stainless Nerf Bars 2008-2018 Chevy Silverado GMC Sierra Crew Cab Attention Please check with dealer to confirm the right model of your vehicle before ordering. Stainless Steel made from high-quality T304 steel.Available in a variety of stylish finishes. Black bars are made of heavy duty steel and Black Powder-Coated Custom mounting brackets provide easy, no-drill installation (most vehicles). 100% brand new 2 bars for both driver & passenger sides. All mounting hardware and DIY instruction included. Covered by a limited Lifetime Warranty (stainless steel) or 3-year warranty (black powder-coated)