Gatco Sharpeners 100percent Natural Soft Arkansas Stone In Wood Storage Box 4in. The Gatco Sharpeners 4in 100percent Natural Soft Arkansas Sharpening Stone features Novaculite that is highly regarded by craftsmen worldwide has a unique crystalline structure which allows it to polish the cutting edge as it sharpens. All Gatco Sharpeners 4-inch 100percent Natural Soft Arkansas Novaculite Stones come with a custom wood case for storage. Specifications for Gatco Sharpeners 100percent Natural Soft Arkansas Stone: Manufacturer: Gatco Sharpeners Color: Grey Package Type: Box Handle Material: ABS Overall Length: 8.5 in Package Contents: Gatco By Bear & Son 100percent Natural Soft Arkansas Stone Gatco By Bear & Son 80040: 100percent Natural Soft Arkansas Stone In Wood Storage Box 4in