Retractable Mechanical Pencil features special technology that helps prevent internal lead breakage that leads to jamming. Convenient side-action click-advance button lets you easily advance the lead without releasing your hold on the pencil. Large twist-up eraser advances or retracts with ease and leaves no messy residue on your paper. Soft, comfortable grip provides added control. Pencil includes distinctive clear design that shows remaining lead supply. Strong super hi-polymer leads create bold lines that erase cleanly. Both leads and erasers are refillable.