Aumo-mate Leather Car Gear Shift Knob Cover Fits for Automatic Car with Button 100% Brand New and High Quality Upgrade your driving comfort and interior appearance Material: Leather and Plastic Adapter inside diameter: approx. 0.3 Inch, 0.35 Inch and 0.4 Inch (8, 10 and 12 mm) Note: It fits for Automatic transmission, with button.