AccuSharp Super Knife and Scissor Sharpener Red Handle Diamond-Honed Carbide Blade. The diamond-honed tungsten carbide blade inserts make quick of sharpening even the dullest knives in just a few strokes. It even sharpens serrated knives Specifications for AccuSharp Super Knife and Scissor Sharpener: Manufacturer: AccuSharp Fabric/Material: Diamond-Honed Tungsten Carbide Length: 8 in Height: 1 in Features of AccuSharp Knife & Scissor Sharpener Pre-Angled Tungsten Carbide Blades; Sharpens Double Beveled Edge Blades; Lightweight and Portable; Small Enough to Fit in Your Pocket; Easy to Use; Package Contents: AccuSharp Knife and Scissor Sharpener AccuSharp 1001C: Super Knife and Scissor Sharpener Red Handle Diamond-Honed Carbide Blade