GrooveTech Tools has released its newest guitar and bass multi-tool, the Mini-Multi. Based on the premise that some players don’t adjust truss rods using a multi-tool, GrooveTech concentrated on action, tremolo systems, intonation, pickup height, and most other adjustments on guitars and basses. The Mini-Multi consolidates 14 tools into a body that’s less than three inches long. Included are eight hex wrenches, four screwdrivers, and a precision ruler. And for those important moments, a bottle opener is provided. Sizes are both metric and inch for use on most makes and models of guitars and basses. Tools are prograde and made to precision tolerances.