Features:Simple operation， quick and easy to sharpen knives， and can protect your hands from accidental damages.With a sucker， can be fixed on smooth and flat surfaces stably. (If you put some water on the bottom of the sucker， it will have stronger adsorption capacity.)Universal base ball design， you can adjust it as you like for comfortable position to operate.With specially designed angle indication mark on adjustable pivot rod， you can adjust its angle according to the angle of knife blades.A sliding piece can be adjusted to fit different knives.Dedicated knife sharpening kits come with four high-quality sharpening stones， 120#， 320#， 600#， 1500#， meeting your different needs.Made of stainless steel (including screws)， ABS engineering plastic， durable to use.After grinding， knives can be very sharp and do not have any rough grinding crack.Perfect industrial design， beautiful appearance.Specifications:Color: blackMaterial: ABS plastic & stainless steel &millstoneStone size: 14.8 * 2 * 0.5cm/ 5.8 * 0.7 * 0.2inOperating lever length: 44cm/ 17.3inWorkbench size: 18.5 * 7.5cm/ 7.3 * 2.9in (L * W)Sharpener weight: 712g/ 1.57lbPackage size: 46.5 * 14 * 8.5cm/ 18.3 * 5.5 * 3.3inPackage weight: 1260g/ 2.77lbPacking list:1 x Knife sharpener4 x Sharpening stones (120#， 320#， 600#， 1500#)1 x Pen1 x Cleaning Cloth1 x Carrying case