The Wingmaster Stainless Steel Peterbilt Tool & Battery Box Step Trims are a practical and beneficial addition to your Peterbilt 389. Made of durable stainless steel, these trims are sold in a set of 4 pieces and fit most Peterbilt 389 makes and models. They provide a sleek and functional solution for enhancing the appearance and accessibility of your tool and battery boxes. With their high-quality construction, these trims offer long-lasting durability and ease of use. Upgrade your Peterbilt with these reliable and stylish step trims today.