Handheld diamond file functional for most grinding jobs, perfect for sharpening kitchen knives, scissors, garden tools, scissors, knives, garden blunts Trimmer, work knife Wood, arts and crafts materials, etc. Ideal for deburring metal, stone, glass, ceramics and composite materials. Fast and durable: electroplated industrial single crystal diamond on a stainless steel base. The sharpening speed is 5 times faster than oil stone and water stone The versatile sharpener sharpens all hard materials, including pocket knives, axes, machetes, lawn mower blades, shovels, drill bits, chisels, carbide, HSS, titanium, ceramic and most ultra-hard materials. Dry grinding. No oil or water required. Applicable to: 400/600# double-sided whetstone is very suitable for coarse grinding or fine grinding Widely used: Pointed tools make better cuts and require less force to penetrate the cuts. Due to its portable design and light weight, this camping pumice stone is suitable for outdoor activities, Camping, gardening, cooking, sports or industry Size: 12.5*3*1.5cm when closed, about 23cm long when unfolded Quantity: 1 piece Color: black "Note: The data are all manually measured, please allow 1-3cm error, due to the light difference and display, there will be a certain color difference, the actual object received shall prevail.