The Safety Slide Callus Shaver/ Rasp is the perfect combination tool for removing calluses & smoothing skin. With its innovative design, this two in one tool employs a unique “slide & lock” mechanism that means that you can safely conceal the shaver portion of the tool when not in use. Great for home & travel. How To Use: Keeping hands away from blade, make sure tool is locked in place. To remove calluses, use on moist skin & gently draw shaver across callus in a shaving motion to remove thin layers of dead skin. To smooth skin using rasp, firmly depress the button on handle & slide shaver down into case, being careful to NOT TOUCH BLADE. (There is a notch on the bottom of the handle for your fingernail to assist in sliding the shaver down into the handle & exposing the rasp). Once tool is locked in place, you can flip the tool & use rasp with back & forth motion to smooth skin.