With the new tool generation of the DG modular interchangeable head milling system, HORN has optimised the interface between the cutting head and shank for greater versatility, stability and higher changeover precision. This is made possible by the new, solid carbide monoblock design of the replaceable head. It means that the interface and the desired cutting edge shape are precision ground from a carbide blank. The system achieves high precision through a guide pin, a precision trapezoidal thread and a taper/flat contact. The changeover accuracy is in the µ range.