8x1.25MM RED ROUND Ball SHIFT KNOB with CARBON FIBER RING Billet Aluminum MANUAL AUTOMATIC Transmission Shift Stick Selector (Threaded &ndash; NO Adapters) for Mazda Mazdaspeed 3 6 CX-7 i S Grand Touring MX-5 Miata Sedan Hatchback Convertible SV Sport (other cars with 8x1.25mm Thread) This is a THREADED Shift Knob! It is NOT a cheap knob that comes with adapters that you see all over the Internet. Those can wobble and come off of your shift rod at any unfortunate time. VMS Racing Billet Aluminum ROUND BALL Style Shift Knob . Brand New. Never Used. Never Installed. Made to Manufacturer Standards for easy Installation. NO drilling or tapping required. Shift Knob is 8x1.25mm and Might Fit Other Brands of Vehicles with same thread and shift pattern. Size width is approximately 1.82" (46mm). REAL Carbon Fiber Center Ring. Made from one piece of solid Aircraft-Quality T-6061 Billet Aluminum and Precision-Machined for a firm, reliable feel against your palm that results into positive shifting.