Features: Fixed Angle Knife Sharpener: easy to assemble and simple to operate, help to rapidly sharpening knives, time saving and labor-saving. Detachable Design: the knife sharpener consist of a main body, a rail, an angle plate, a stone holder, and a sharpening stone, all these parts are detachable for conveniently storage and carry around. Suction Cup Base: 2.9-inch (74mm) large rubber suction pad for gripping firmly on the desk/floor/countertop during sharpening a knife. Reliable Quality: environmental friendly ABS engineering plastics has high hardness and good durability, stainless steel plate and rail are rust-proof. 4pcs Sharpening Stone: 120#, 320#, 600#, 1500#, 4pcs sharpening stone from coarse to fine grits to meet your various demand. Using Guide: 1.Place the sharpener on the flat table and press the lever down at the rear to to let the suction cup firmly hold on the desk. 2.Insert the angle plate. The plate can be adjusted up and down slightly to reach the perfect angle. Tighten the screws before using. 3.Place the knife under the fixing plate and tighten the screw. Or put the knife against the fixing plate and hold the knife by hand. 4.Put two sharpening plates on the main rail. Connect the other stainless steel rod on the main rail. Insert the rail into the angle plate, adjust the rail to perfect angle, pull the rail to sharp the knife. 5.When sharp a scissors, adjust the sharpener to the edge of the table. Make the fixing plate for scissors align at the table edge. Then repeat the process above.