The Accurate Extreme Knob Kit comes in large and small sizes. The kit includes the knob in either Blue, Red, Black or Silver plus all hardware needed.
Questions for options:
Size: Large (3.25″) or small (2.75″) knob size.
Flat Pin: Choose the YES option if this is going to be installed on an old Boss reel or ATD. A different center pin is provided to mount to the handle arm. Use this option for arms that are flat where the pin mounts (no keyway).