Features: It‘s unique design provides an elegant and fashionable driving environment. The gear shift is suitable for most automatic gear cars. Easy to install and disassemble. It only takes a few minutes to install. Choose a suitable adapter to install on the shifting stick(including 7mm, 9mm) If you can't install, please find a professional installation. Purchase includes three adapter sizes to fit various applications. Specifications: Color: Black Material: Acrylic Overall Height: 5.2cm / 2.05'' Diameter: 5.4cm / 2.13'' Adapters Inside Diameter: 11mm / 0.43'' Adapters Size: M12x1.25 Notes:The size measured by hand, so it may have a little 1-3 mm difference.Installation Instructions: Remove existing shift knob. Select correct adapter and install over shifter. Package Include: 1 x Car Gear Shift Knob 3 x Adapters