The Peterbilt National Seating 2000 Ultra Ride 10 Inch Seat Base Adapters are a practical and versatile solution for enhancing your Peterbilt truck's seating experience. With a glossy black finish, these seat adapters are available in chrome or billet aluminum, offering a sleek and stylish look. Designed to fit most Peterbilt 379, 386, 389, and 579 models with 2000 series National Ultra Ride seats, these adapters provide a comfortable and secure seating arrangement. Upgrade your truck's seating with these durable and reliable seat base adapters.