Features: This gear shift knob adapter universal fits all manual model. It‘s unique design provides an elegant and fashionable driving environment. Made of aluminum alloy,with high strength and corrosion resistant, not easy to break, more durable. Easy to install and disassemble. If you can't install, please find a professional installation. Specifications: Color: Black Material:Aluminum Alloy Overall Height: 5.4cm/2.13“ Outer Thread Pitch: M12x1.25 Inner Adapter Diameter: 1.4cm/0.55" Steam Length: 1.4cm/0.55" Upper Diameter: 2.2cm/0.87" Bottom Diameter: 1.7cm/0.67" Screw Size: M5x0.8 Wrench Size: 4.7x1.8cm /1.85"x0.71" (L*W) Installation steps: Step 1: Choose the right plastic hose to fix the shift lever. Step 2: Secure Adapter with Plastic Hose and Tighten. Step 3: Fix the adapter with the shift cover (if your vehicle does not have a shift cover, you can ignore this step). Step 4: Put the shift knob into the adapter and the installation is complete. If you screw them in evenly you should not have to worry about the adapter coming loose. You can also put some threadlocker on the screws to help them stay in place against the vibration from the car. Package Include: 1 pcs Gear Shift Knob Adapter 7 pcs Screws 1 pcs Hex key