This black Hurst shift knob for 6-Speed manual transmissions is a great way to add the classic look and feel of shifting performance to your modified classic, or your modern-day muscle car. The shift knob measures 1.88 inches round and features the 6-speed pattern with Reverse up and to the right and has the Hurst logo engraved on both sides. Fits shift sticks with 3/8-16 thread size.