Cobb Tuning Knob Trim Ring for Cobb Weighted Knob - Charcoal Grey Anodized - SUB-001-422-CHARCOAL-GREYEMISSIONS This part is not an emissions related part and therefore can be used on Emission Controlled Vehicles. DESCRIPTION Add a touch of color to your car's interior with our custom colored COBB Knob Trim Rings. These trim rings are compatible with our newer Weighted COBB Knobs. Each trim ring comes with an o ring to secure it in place on your knob. Available in the following colors: Blue Gold Green Charcoal Grey Orange Silver Blued Titanium The