The street-sport bar is just what you need for your high performance street car. Designed for high performance street use. Bolt-in harness mount tube for easy installation of safety harnesses. Bolt-in removable horizontal harness. 4 point roll bar is made of 1.750 x .120 dom mild steel tube. All necessary installation and mounting hardware with back-up plates is included. The street-sport roll bar has a bold in harness mount tube for easy installation of harnesses and access to the back seat for street use.