Your gauges need to be front and center to see all your engines vitals. This mount is designed to clamp on the the steering column allowing you to see the screen in a natural position. It has an adjustable face to set the perfect angle for your car/ truck. The kit comes with an additional bracket for the Nano O2 / Nano Pro. It can be mounted to on either side or even both sides with a second bracket. It will fit the Fuel tech FT450, FT550 and the FT600 screens. This ridged mount is made from 5051 Aluminum and is powder coated texture black. Not only will this survive in your race car it will look great the whole time. Collet sizes are available in 1.5, 1.25, 1.125 inches.