MicroEdge Technology is an advanced manufacturing process that utilizes chemical etching to produce razor sharp cutting edges that last for a lifetime. MicroEdge Technology: MicroEdge Technology is an advanced manufacturing process that utilizes chemical etching to produce razor sharp cutting edges that last for a lifetime Stainless Steel Grater: 100% Stainless steel blades and frames that minimize flexing, provides the highest safety and ensure a lifetime of sharpness, durability and performance Non-Slip Handle: Non-Slip rubber frame bumper ensures comfort, stability and safety during grating process Grater with Cover: The salad grater comes with a reusable protective cover included on paddle and rasp styles for safety during storage Dishwasher Safe: The Stainless-steel grater is dishwasher safe