HURST OFFICIALLY LICENSED SERIES. Black 2.25" diameter shift knob with engraved White 5 Speed Reverse Lower Right pattern. Outlined White HURST logo engraved on both sides. Comprised of specially formulated high-impact polymer resin specifically designed to meet performance level torque and temperature requirements. This knob has a 16mm x 1.50 Brass master insert and comes with a threaded Brass adapter & jam nut in the size of your choice. Hurst Officially Licensed Product produced by Speed Dawg Shift Knobs. Made in the USA. Factory Mustang shifters may require a Boot Retainer to complete the installation. Corvette thread sizes (9/16-18 & C6) may require up to 4 weeks for production and delivery If you are not completely satisfied with this item you may return it within 30 days for a full refund. 1 year limited warranty.