The express package includes: Mini grinding wheel * 2 Dimensions: 9.2 x 3 x 1.3cm / 3.6 x 1.1 x 0.5inch Black ERGONOMIC DESIGNOur pencil sharpener is comfortable to hold and can grip the most circumference. wide, suitable for left-handers and right-handers. Non-slip rubber bottom, high stability and safety, can be used on any kitchen surface. EASY TO USE: Small and convenient, just insert the blade into the pointed notch, then pull gently the knife several times, the dull knife will reoccur after a few seconds. WIDELY COMPATIBLE: Heavy-duty construction can sharpen any type of knife, including kitchen knives, utility knives, paring knives, sharpeners, slicers, boning knives, roughing knives and axes, but not suitable to serrated blades (like bread knife). Universal kitchen knife sharpener: Professional knife sharpener is suitable for most kitchen knives, Santoku knives, sushi knives, fruit knives , steel knives, diamond knives, tungsten steel knives, steak knives and hunting knives.