Chef'sChoice 0012001 EdgeCraft Sportsmen Three Stage UltraHone Electric Knife Sharpener #12 For sharpening all types of knives, including hunting, fishing, pocket, kitchen and household knives Sharpens both Straight edge and serrated knives to better than factory sharpness Three stage sharpening creates the Trizor edge, recognized for astonishing sharpness and durability The Trizor "Gothic Arch" edge structure known to be stronger and longer lasting than hollow ground or conventional "V" type edges Flexible spring knife guides ensure precise angle control and eliminate guesswork