This Kurutoga brand mechanical pencil features a twist to sharpen mechanism that keeps the lead core rotating when in use, ensuring the lead stays pointed and the size of the written characters stay uniform. This handy mechanism means that even when writing for long periods of time the lead core will stay intact, allowing you to write evenly and consistently. Measures 0.5mm and comes in various colors. Mechanical Pencil 0.5mm/Pencil Tip Twist To Stay Sharp