General description This compact diamond sharpening stone is designed in a credit card size, making it highly portable and easy to carry in a wallet or pocket. It is ideal for maintaining a very sharp edge on knives and small tools, whether at home or on the go. The stone features a durable diamond abrasive surface suitable for quick and effective sharpening. Technical specifications Size: 83mm x 51mm x 1.3mm Weight: approximately 30g Abrasive: Diamond Color: Blue Series: Pocket models Grit: Coarse Compatibility and accessories Suitable for sharpening knives, small blades, and other edged tools Includes a vinyl carrying case for protection and portability Installation No installation required. Simply use the diamond surface to sharpen blades by sliding them across the stone at the desired angle. Usage Use with water for lubrication; never use oil To sharpen, draw the blade across the diamond surface with consistent pressure and angle For optimal results, start with a few strokes and