This compact stone box measures 7.75" x 4.25" x 1", making it perfect for holding sharpening stones and other small accessories like the small knife attachment, slide guide, drill stop collar, guide clips, a sharpie, and many other items you may like to carry with you in your sharpening kit.. Designed to fit into the carry case, you can add up to two boxes to maximize your storage capacity. (Each carry case comes with 2 stone boxes, but will fit a total of 4). It's an affordable and practical solution for keeping your sharpening tools organized and easily accessible.