Genuine sequential gearshift knob optimized for the Thrustmaster TH8A and TH8 RS shifters Screws directly onto the TH8A and TH8 RS shifters Design and ergonomics optimized for shifting gears in sequential mode Actual size: 4.3" tall; 1.6" in diameter; Weighs 0.5 lbs. providing better inertia and an authentic feel when shifting gears in sequential mode (+ / -) Allows for a better grip and enhanced comfort when using the gearshift knob, thanks to its height and shape