Using this GrimmSpeed Stubby Shift Knob is easy. Just screw it onto your manual Subaru's shifter. If you have a 2002 - 2014 WRX with a 5 - speed transmission, you'll need to buy the shift boot retainer separately and install it too. When you're driving, the short and stubby design gives you a great grip and a smooth shifting experience. For maintenance, you can use a mild cleaner to wipe the stainless steel surface. Avoid using harsh chemicals that might damage the textured powder coat finish or the laser - etched logo. Keep it clean regularly to maintain its good looks and performance.