Allows you to attach a shift knob to your shift base. Enter your shifter base type. Available for Logitech, Thrustmaster TH8A, Fanatec, PXN and M8 Thread for "generic Shifters" These include a 1/2" x 13 Stud. All shift knobs on this site take 1/2" x 13 thread. These will work with any Eaton knobs and almost all other off brand shift knobs. Make sure to check the thread pattern of your knob if you do not have one from this site.