Check the listing for details. Mini Pocket Diamond Sharpening Stone | EDC Bushcraft Fishhook Sharpening Keyring. Condition: New. Listed at 6.76 USD. • A portable sharpening stone, perfect for sharpening knives and tools in the field. This sized stone is also perfect for sharpening fishing hooks, etc, and will make the perfect addition to your fishing kit. It is also a great size for key-rings and EDC. • Water or oil is also not required for this stone, making it easy to sharpen tools on the move. The stone is #400 grit which is course enough to repair chips or ricks in your blade but fine enough to refine the blade of your knife. We tried and tested different grits and found #400 grit to be the best option if you only have one stone available. • Diamond stones will sharpen Carbon Steel, High-Speed Steel (HSS), and Tungsten Carbide tools. • The portable stone comes with a Stainless Steel screw lanyard for easy storage. It also makes it easy to secure onto the outside of your rucksack for quick access in the field. • If you have any questions, please don't hesitate to ask! Quick Specs: • Weight: 16g • Dimensions: 64mm (L) x 18mm (W)• 1PCS Stainless Steel Screw Lanyard• #400 gritstone• Perfect portable EDC sharpening stone• Suitable for all metal types Thanks for your interest in our products! We ship all orders before 3.30 PM the same day (Monday - Friday) second-class (2-3 days shipping time) unless specified otherwise. We also have a free 60-day return policy. Any questions, please let us know!