High quality material. The knife sharpener is made of good quality plastic and stainless steel. It has three different sharpening stages combines coarse grinding, fine grinding and polishing for long life. 3 in 1. The sharpener combines coarse grinding, fine grinding and polishing. Diamond jars are used to sharpen dull metal knives and scissors. Tungsten steel boxes are used for rough grinding. For ceramic boxes, you can finish, polish the edges. Effortless sharpening. With The Innovative Kitchen Sharpener, your knives will be like new in just a few strokes. Sharpening your knives has never been so quick and easy. No more tired hands and sore arms. Safety and anti-slip. The bottom of the kitchen knife sharpener has rubberized feet so it won& 39;t slip when sharpening. The handle is ergonomically shaped, perfectly adapted to the shape of your hand and with its pleasant to the touch grip, offers optimal comfort of use. An essential for a pro. A pro chef needs pro equipment, it can be used as a chef& 39;s knife, boning knife, paring knife, fruit knife, ideal for indoor, outdoor and camping, will allow you to slice, chop meat and dice, peel fruits and vegetables with ease. Product dimension: 18.5 x 4 x 8 cm Package Contents 1 x Knife Sharpener