Ultimate Arms Gear Compact Pocket Size Tactical Outdoor Survival Knife Tool Fishing Hunting Fruit Camping Sharpener w/ Ceramic Sharpening Rods High-Efficiency Sharpening Results. Manufactured with Coarse and Fine Ceramic Stones at Proper Grinding Angle to Put an Edge on Any Worn Blade Yet it is Compact and Weighs Less than 1 Ounce for Easy Carry. 2.75" in Length. Ceramic Rods Keep Knives Razor Sharp. Sharpen Knives Like A Pro.