Hurst matte black ABS shift knob with a 4-Speed pattern engraved. This shift knob has a 2-inch diameter, molded-in brass thread insert, and includes adapters for 3/8-16 and 3/8-24 as well as jam nuts. Similar shift knobs are available in various colors, ABS or billet, and blank or engraved 4, 5, or 6-Speed shift patterns. For other thread sizes, look to the Hurst 16900HST adapter kit that is coming soon to make your installation seamless and easy.