Putting an American Shifters Bank Shot series of billiard shift knobs in your ride will make you feel good each time. Only American Shifter uses 100 per cent real authentic unused billiard balls then machines an opening in each one to insert a precision threaded adapter to ensure a snug fit. This unique system improves drivers feedback while providing a smooth solid shift feeling. So if you looking for a classic 8-Ball knob, a cue ball, the ball of your favorite color, or any billiard or pool ball you want, you have all those in American Shifter. All balls are 2-1/4 inches in diameter and include a threaded shift adapter and detailed instructions for easy installation. All Bank Shot series of shift knobs can be custom etched to include your shift pattern, logo or design of your choice.