Slider assembly

A slider tool, having a slider bed and a slider movably mounted thereon by means of gliding plates on a dovetail guide, the slider having a slider body and a slider holder formed thereon, wherein a first symmetry plane (S1) of the slider body and/or of the slider bed is present which runs through the center of the slider and/or the slider tool, wherein the slider holder has a holding section formed as a dovetail and symmetrically to a second symmetry plane (S2), and the first symmetry plane (S1) does not coincide with the second symmetry plane (S2) so that gliding plates are provided on gliding surfaces of the holding section formed as a dovetail which gliding plates are arranged unsymmetrically to the first symmetry plane (S1).