The Peterbilt 389 Oval Tractor Trailer Knob Set is a practical and stylish addition to your Peterbilt 389 model. Made from chrome plated billet aluminum, this set includes one tractor knob and one trailer knob, both featuring the iconic 389 script. The oval shape adds a touch of elegance to your truck's interior. Designed to fit most Peterbilt 389 models, this knob set is a durable and functional upgrade that enhances your driving experience.