Description Quick-clamp design makes sharpening the cutter easier and more efficient, you dont need any wrenches and screws to help you fixed the cutter. The sharpening stone can be rotated about 180 degrees, and there is no need to remove the sharpening rod when changing sides. Silicone gaskets on the clamping position and mianbody to protect your cutter and desktop from scratches. Automatically rising the clamping plate, no need to pull up the splint by hand. Can quickly locate the sharpening angle of 15 degrees. Material: stainless steel+aluminum alloy Table clamp range: 0-55mm / 0-2.2in Sharpening angle: 15-40 Whetstone size: 160 * 22 * 8mm / 6.3 * 0.7 * 0.3in Package size: 310 * 140 * 60mm / 12.2 * 5.5 * 2.4in Packing List:1 * Grinder Machine4 * Whestone (120#, 400#, 800#, 1500#)1 * User Manual