Jetpack Adjustment Tool (4th shin tool)

This is the 4th shin tool used by Boba Fett with slight variations on all suits, except the ROTJ Hero and the ROTJ SE (on the later suit they used a newly created 4th shin tool that was made specially for the Star Wars - Visual Dictionary). Although the origin of this tool was never discovered, one of the leads was that they used the casing of a disassembled microphone, but the exact model and manufacturer is still unknown.