There are spaces where using a screwdriver or socket wrench simply won’t work. Confinements or obstructions prevent the use of a usual tool. That’s where this driver comes on handy. Plug in your appropriate bit and you have leverage from the sliding driver handle to get the job done. I store mine in the long, narrow Zipper Pouch by Maratac, along with the Titanium Precision Screwdriver Kit.