The Lansky Hard Arkansas Benchstone is great when you need an extra fine edge. This is the ultimate finishing stone for professionals and laypeople alike. These Hard Natural Benchstones are cut from carefully selected novaculite and mounted on wood blocks for greater sharpening ease and hand protection. A Natural Arkansas Benchstone is perfect for sharpening pocket knives kitchen knives hunting and fishing knives utility knife blades cutting tools for gardening woodworking tools and more. Stone measures 6" long 2" wide and 1/2" thick.