Using the GrimmSpeed Stubby Shift Knob is easy. Just screw it onto your manual Subaru's shifter, as long as it has a 12x1.25mm thread pitch. For 5 - speed 2002 - 2014 WRX models, it's a good idea to buy the shift knob boot retainer separately and install it as well. When using the shift knob, just shift gears as you normally would, and enjoy the upgraded look and OEM feel. To keep it in good condition, clean it regularly with a soft cloth. Avoid using abrasive cleaners as they might damage the textured powder coat finish. If you notice any issues like loosening, just tighten it up gently. That's all you need to do to keep your shift knob working great!