Give a bold interior accent to your truck with the red trailer brake knob featuring black engraving, designed for 2.125-inch threaded dash air brake valves. Manufactured as a high-quality aftermarket replacement part, this knob includes a polished billet collar and a built-in thread adapter for secure installation. The engraved black lettering on the red finish adds a distinctive visual detail while maintaining a functional, factory-style operation for air brake control systems. It is sold individually and engineered for heavy-duty universal truck applications, making it suitable for a wide range of interiors. Built with durability in mind, this trailer brake knob is made in the USA and includes a set screw in the collar to help maintain alignment during use. A warranty against defects in workmanship and materials is also provided from the date of purchase.