Ensure your semi truck is Ready for the Road Ahead™ with an efficient change of gear speeds, with the Fuller- Transmissions 15-Speed Shift Knob. With an ergonomic design, this replacement knob gives operators full control over a vehicle's gear speeds, allowing them to move up or down as needed. Manufactured with robust materials to withstand constant use and pressure from regular shifting. FleetPride is your First Click in Heavy Duty®.