Arkansas Sharpeners Whetstone Small AC1. This Knife Sharpener from the great folks at Arkansas Sharpeners measures 4" x 1 1/2" x 1/2" and comes with a plastic storage box. Don't you dare own a knife without the Arkansas Sharpeners Whetstone Sharpener. Specifications for Arkansas Sharpeners Whetstone Sharpener Knife Sharpener: Manufacturer: Arkansas Sharpeners Handle Material: Plastic Blade Material: Plastic Features of Arkansas Sharpeners Whetstone Sharpener Knife Sharpener: Arkansas Whetstone Large Measures 4" x 1 1/2" x 1/2" Plastic storage box Package Contents: Arkansas Sharpeners Whetstone Sharpener Arkansas Sharpeners AC1: Whetstone Small