This modern and stylish mechanical Pencil is chock-full of cool features. Theres no need to let go and re-grip your Pencil every time you want to extend the lead. Just shake the Pencil up and down! （"fore Knock" mechanism ) you can also push the clip downward-this conventional click mechanism is very smooth and easy. To lock the shaker mechanism, push the clip upward. ("Fure lock" mechanism) when locked, you dont have to worry about accidentally extending the lead; even when you shake the Pencil, the lead will not come out. The long guide Pipe lets you see where youre drawing or writing. The popular Tombow Mono eraser is installed at the top with a twist mechanism and usable length of approximately 0.7 inches (1.8 cm). in addition, if you run out or eraser, you can replace it with an eraser refill, er-mg. This attractive Pencil features the Tombow Mono Stripe design, and has a transparent gray grip area and clear clip.