Gunnebo 5/16" MIG Shortener - Grade 100Gunnebo GrabiQ 5 16" MIG Shortener Grade 100 Chain Sling Adjuster The Gunnebo 5 16" MIG Shortener is designed for professionals who need precise, secure, and field adjustable chain sling control. As part of the Gunnebo GrabiQ Grade 100 system, this compact shortener uses a unique MidGrab design that allows sling leg shortening from the bottom unlike traditional top only methods. This innovation gives riggers the ability to adjust chain length in real