The DMT Diafold® Hook & Knife Sharpener with Fishhook Groove is an especially versatile sharpener. Convenient, lightweight and portable, this 4" x 1" Diamond Whetstone sharpener works well on scissors, knives, garden tools, and specialty tools. The added milled groove allows you to sharpen hooks and other pointed as well. Convenient size measures 9 1/2" long open and 5" long when closed. Folding plastic handles protect sharpener when not in use. Sharpens in a fraction of the time required by conventional stones. No messy oils needed -- sharpen dry or with water. Durable construction will provide years of consistent performance and reliable service. Available in both coarse and fine grit. The folding design makes this sharpener easy to keep close at hand in your tool box, backpack, or pocket. Made in the USA.