The Gator Grip is a jack of all trades, a universal socket that can just about twist, pry or twist anything off you can think of, regardless of size. Instead of lugging around a tool box full of sockets, wrenches and pliers, the Gator Grip is a self-adjusting universal socket with a 3/8 drive.
This means that you can tackle any size from 1/4 inch to 3/4 inch (7mm - 19mm metric) of screw, pin, wing nut, hex nut, or anything else with an edge that the tool can grab hold of.
The Gator Grip also comes with a drill adaptor so you can use the same self-adjusting functionality on your drill.
There are some people that insist that a normal socket or wrench works slightly better, and they might be right. But if you're going for speed and adaptability, it's hard to beat the Gator Grip, as nearly 500 reviewers on Amazon have pointed out.