Accusharp Natural Arkansas Pocket Stone AS. This Knife Sharpener from the great folks at AccuSharp measures 3" x 1" x 1/4" and comes with a hook groove for all varieties of hooks. Don't wield a knife without the Accusharp Natural Arkansas Pocket Stone. Features of Accusharp Natural Arkansas Pocket Stone Knife Sharpener: Accusharp Natural Arkansas Pocket Stone 3" x 1" x 1/4" Hook groove for all varieties of hooks Black belt pouch Hang packaged Package Contents: Accusharp Natural Arkansas Pocket Stone Accusharp AS024C: Natural Arkansas Pocket Stone