what is it? The Gratest™ is a professional-grade rasp designed specifically for your feet. what does it do? Constructed of premium, expertly-crafted stainless steel and designed with more than 200 safety-edged micro grates, an extra-large filing surface and an ergonomic soft-touch handle, this rasp helps you efficiently and safely remove built-up layers of dry, hardened, thick or callused skin. why is it the best? We designed this rasp to be safe, effective and comfortable on every type of skin. why will you love it? Because nothing in life should be hard. Including your feet. 1 XL rasp