Rare Vintage Black Star Clay Billiards Pool Cue Ball Gear Shifter Shift Knob. Internal Diameter of Screw Hole: 0.34 inches. This item is used and shows signs of use and wear. This item was left in its original, found condition.The item "Rare Vintage Black Star Clay Billiards Pool Cue Ball Gear Shifter Shift Knob" is in sale since Thursday, November 26, 2020. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Interior\Shift Knobs & Boots". The seller is "snackula" and is located in Lafayette, California. This item can be shipped to United States.