Super Kit v1.0 (1989) is a set of disk copying utilities for the Commodore 64.  In addition to the standard single and dual drive copier, there is also single / dual drive nibbler, disk editor and disk scanner.  Initially I thought this program came from Commodisk Issue 35, but on further examination it turns out that the version from Commodisk is actually newer and contains some additional utilities even though they look very similar and have the exact same name, so you may want to go check that out.