The first multi-tool for guitars and basses that’s actually useful, without unnecessary gimmicks. The CruzTOOLS GrooveTech is a 14 in 1 tool that includes both metric and inches for import or domestic guitars/basses. This second generation tool includes 5/16" for Gibson guitars, ruler,  5mm hexwrench and 1/16" hex wrench. With its light design, the GrooveTech is easy to use and is a must in every guitarist gig bag.