The Ergo Steel-Stainless consists of a pair of pivoting, specially developed flexible stainless steel rods on a compact, open design, electropolished base. Under each pivoting rod, spring mechanisms provide the perfect amount of tension between the knife edge and stainless steel rods. Both sides of the edge are straightened simultaneously, assuring a perfect edge in seconds. Requires no training to use, the Ergo Steel-Stainless can be used comfortably and safely, right-or left-handed.