A tool system for configuring honing tools includes at least one tool body that defines a tool axis and an axial bore arranged coaxially to the tool axis, as well as multiple transverse bores oriented perpendicular to the tool axis, wherein the transverse bores form multiple groups around the circumference of the tool body, each group having at least two axially spaced apart transverse bores. The tool system further includes multiple sets of support rail units with guide pins for introducing into transverse bores of a bore group, and also includes at least one set of bolt guide elements for mounting on the tool body, with each set having a bolt guide element for each transverse bore provided for receiving a guide bolt, with a guide bore formed therein, which, when the bolt guide element is mounted on the tool body, runs coaxially with the transverse bore.