The Multi-Sharp ATT3500 Diamond Tool Sharpener is highly versatile, suitable for many applications 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. Also, suitable for sharpening multi-tool blades, pen/utility knives carbide tile cutters, pointed tools and secateurs/loppers. The ATT3500's diamond surface sharpen's the hardest materials, including carbide, ceramic and stainless steel. The sharpening surface retain their flatness, and are extremely long-lasting. The anodised aluminium case protects the diamond rod when not in use. The rod is lockable at any length. Specification Diamond Rod Length 6.7cm (2.6in).