When I've wanted to get a frame out for inspection, I've had to wait for the bees to get out of the way, then reached in with my fingers and try to pull the frame up by it's outside tabs. Not easy if you're wear gloves, and if there's heavy propolis, forget it! I take a minute to use the Maxant tool to pry one side up, then hold it while I try to pry loose the other side. I try to put the tool somewhere I can get to it later, and then pick up the other side of the frame. Sometimes I find a dead bee on the outside of the frame where she was pinched when it was pried up from one side.
More problems when I'm replacing the frame... My fingers holding the side tabs keep me from seeing if there are bees under there. I give them a couple of "warning drops", but I have to put the frame down some time,
and often I hear the awful "crunch" of a wayward worker.
A frame-grip is a simple one-handed tong which allows you to get a frame out of the hive without having to use your clumsy fingers. I'd read about them, and figured I'd give it a shot.
This thing is great for me. I can lift the frame out without killing bees, or having to wait for them to get out of my way. It allows me to hold the frame with one hand, while I use my other hand to take a picture of the frame, or point to the queen. At an expense of only eleven or twelve dollars, I highly recommend it!
Rossman Apiaries in Georgia has it at http://www.gabees.com