UST Sharpening Stone with Coarse and Fine Sides for Blades, Knives and Tools While Camping, Hiking, Backpacking, Hunting, Emergency and Outdoor Survival DIMENSIONS: 4 L x 1 W x 0.4 D and weighs 2.2 oz EASE OF USE: Coarse side repairs damage and adds a rough edge while the fine side polishes the edge for a razor-sharp finish VERSATILITY: Stone offers a combination of fine and coarse textures for sharpening knives and other blades CONVENIENT: Small size allows for carry in any backpack, pocket or gear and allows for storage in small places when not on outdoor adventures RELIABLE: Lightweight, durable construction provides years of consistent sharpening