The McCrab was designed for permit by George Anderson of the Yellowstone Angler, and developed with help from John Barr and Jim Brungard. It has also been very effective on other species as well. Pro tied on sticky sharp chemically sharpened Japanese Dai-Riki 930 saltwater hooks.
The size of the body of the crab not including the legs runs from 1/2 inch (12mm) on the size #4 to 1 inch (25mm) on the 3/0. Some sizes available with full attached weed guards.