Pentel Twist-Erase III Mechanical Pencil

NY Times recently voted this the best pencil for crossword puzzles!

These mechanical pencils are practical and long-lasting. The plastic barrel pulls apart to reload with plenty of lead "ammunition." When your lead point wears down, simply push down on the eraser-top, and more will appear. But the best feature of the Twist Erase III is the eraser. Just "twist" your pencil to expose more eraser as needed.

Takes 0.7 lead.