Features: Enhances For V860 III Flash Control precise and ease of use with this Coding knob, for seamlessly parameter adjustments. From ABS this Coding knob offers high precise and strong compatibility with various flash units, ensuring long time reliability. For professional photographers, photography enthusiasts, and users requiring precise lighting control in their work. Perfectly for wedding photography, commercial, outdoor and indoor portrait, providing versatility across multiple scenario. Elevates your photography experience by integrating this essential accessory into your gear, optimizing your Flash unit functionality and achieving superior lighting result. Specifications: Item: Coding Knob Diameter about: 2cm/0.79in For V860 III Flash Control Package Includes: 1PC Coding Knob note: Due to the problem of lighting effects there is certain tolerances in product, please understand. Please allow 0-1cm error due to the measurement.