I "borrowed" a couple of these from a popular seafood resturant several years ago. I have searched for them for a long time. VERY easy to use, does a great job on the giant crab legs. Much easier than "crackers".
These sea-shellers work great on crab legs. I only needed 4 or 5 but couldn't find smaller packaging. If I ever have a big crowd over for crab legs, I'll be ready!