The multi sharp att3500 diamond tool sharpener is highly versatile suitable for many aplications around the home garden for diy and sports it has 3 sharpening surfaces flat grooved and half round coated in high quality diamond particles which provide excellent durability suitable for sharpening multi tool blades penutility knives carbide tile cutters pointed tools secateursloppers the diamond surfaces sharpen the hardest materials including carbide ceramic and stainless steel the sharpening su