Towing a trailer or just want better visibility in your heavy-duty truck? This pair of manual towing mirrors is made for 2007-2014 Chevy Silverado and GMC Sierra 2500 HD & 3500 HD models. They're brand new, in original packaging, and ready to bolt on as direct replacements for your worn-out or broken mirrors. The mirrors come in a textured black plastic finish that matches the rugged look of your truck. They're manual operation – meaning you manually fold them in/out and manually extend the towing section – no power needed. That keeps things simple and reliable. They're non-heated, so no wiring for heat elements. Each mirror is designed for towing, giving you a wider view of what's behind and beside your rig. Part numbers: GM1321337 and GM1320337. Supersedes numbers like 25815970/71. Fitment covers various cab styles (crew, extended, standard) and engine sizes. Brand is AutoResolution1, and they come with a 1-year warranty. Perfect for replacing cracked glass, rusty housings, or upgrading from small mirrors to proper towing mirrors. Installation is straightforward if you're handy, or any shop can do it. Enhance safety, reduce blind spots, and get your truck ready for work or play. A must-have for HD truck owners who use their vehicles for towing, hauling, or just want that tough, functional look.