Serve Slide Eraser & Sharpener Combo slides horizontally for easy access to sharpener. Simply slide half of the barrel to open & close access to the sharpener. Extra-large, quality eraser is smudge-proof, dust-free & trace-free for clean erasing. Cap keeps eraser clean. Use single-hole sharpener built into the bottom for pencils with a standard barrel size. Sharpener cap provides clean use & keeps the waste inside. Large waste tank provides extra storage space for shavings.