A quick-change tool post is a device used in lathes that allows for the rapid swapping of cutting tools. This system enhances efficiency by minimizing downtime during machining operations, as operators can easily replace tools without needing to realign them. These tool posts typically feature a clamping mechanism that securely holds the tool in place while allowing for quick adjustments. They are especially beneficial in production environments where multiple tools are used frequently, making them a popular choice among machinists and in workshops that utilize CNC machines or manual lathes.