The Peterbilt 359,379,389 Steel 1.5 IN Cab Mount Mirror Brackets (12GA-PFT-MB-CM-SS-389) 389 - Stainless Steel is a practical and reliable product designed for Peterbilt 389 models. Made from stainless steel, these mirror brackets offer better visibility around pipes and wider trailers, enhancing safety on the road. They use the factory mirror head and mounting location, making installation hassle-free. With a width that is 2 inches wider than the OEM style, these brackets provide improved visibility. Available in paintable plain steel or stainless steel, they are durable and customizable to suit individual preferences. Please note that mounting hardware is not included.