The TOS VARNSDORF LD 650 is a highly specialized and robust facing head designed to significantly enhance the functionality of compatible machine tools, particularly horizontal boring mills. Its primary construction consists of a strong, axially symmetrical rotational basic body. This innovative design includes a central axial hole specifically engineered for the potential passage of the machine’s main work spindle, which is critical for supporting long tools or utilizing through-spindle coolant and air. The head incorporates a meticulously guided slide mechanism that is conducted perpendicularly to the main body. This perpendicular motion is essential for performing advanced operations such as precise facing, intricate boring, and accurate grooving on large or complex workpieces. The LD 650 provides the exceptional rigidity and stability necessary for achieving high geometric precision and is an indispensable accessory for workshops focused on heavy-duty, versatile machining within a single, efficient setup.