Resharpen kitchen, leisure and commercial knives at any time; optimal blade construction and low material removal thanks to diamond discs; 3 phase grinding: pre-sharpening and sharpening phase with diamond discs, polishing phase with ceramic discs; 15° grinding angle: ideal for Asian knives; even conventional European knives with 20° grinding angle can be sharpened in phase 1 to the 15° grinding angle. for Higher sharpness and durability; professional elastomer blade guide; "arc-shaped grind" for unparalleled sharpness and durability; polishing phase also suitable for resharpening serrated knives; on/off switch