AR9M006-B is a knob operator accessory designed for use with AR22 and AR30 selector switches in the Fuji Electric command switch product line. This knob is specifically compatible with AR22PR, PCR, PY, and PCY models, as well as AR30PR and PCR variants, providing a reliable interface for manual control operations. The knob is available in multiple color options (black, green, and red) to support visual identification and operational clarity in industrial control panels. It is designed for panel mounting applications where space efficiency and ergonomic control are required. The AR9M006-B knob integrates seamlessly with the modular command switch architecture, allowing for flexible configuration of control stations in machine tools, industrial machines, and instrumentation panels.