The SM-15A-2 Attachment is for the stereotaxic manipulator SM-15R/L in order to fix a bar with 7.9mm O.D. to 8mm O.D. The attachment adopts the bar 8mm O.D. of, for instance, the electric micro-injector IMS-20, the multi-use holder SMM-HD, and non-Narishige products or accessories with bar 7.9mm O.D. In addition to the SM-15R/L, it can be attached with the manipulator SMM series.