There is nothing more unique or eye catching than the look of a custom shift knob. Holley has taken customization to a new level by mating a custom shift knob and the iconic Mickey Thompson M/T logo to offer a clean classic look to your classic modern day ride! Metric Master Thread Kit - comes with the following adapters: 7mm x 1.0 8mm x 1.25 8mm x 1.50 10mm x 1.25 10mm x 1.50 12mm x 1.25 12mm x 1.50 12mm x 1.75