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, pen/utility knives; carbide tile cutters, pointed tools, secateurs/loppers. The diamond surfaces sharpen the hardest materials, including carbide, ceramic and stainless steel. The sharpening surfaces 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. The Multi-Sharp Diamond Tool Sharpener has been recommended BEST BUY by WHICH ?