Specifications: Material: aluminum alloy Color:silver Adapter diameter: 8 mm / 10 mm / 12 mm. Dimensions:5.1inch / 130mm (Long) Package Contents: 1 * Shift knob, 3 * rubber adapters Installation steps: Step 1: Take a rubber adapter of the appropriate size in the box and compare the dimensions to the car gear shifter stick. Step 2: Choose a suitable diameter size adapter and place the shift lever Step 3: Insert the new shift knob head Manually twist firmly and the installation is complete Because of manual measurement, there will be a 0.1inch-0.3inch size error, please understand Notice: Automatic transmission car: If the shift knob has a button lock, it cannot be used If you have any questions in use, please email to customer service, we will serve you in good faith Thank you for your support and patronage