uni ball Toga M5 450T 0.5mm Mechanical Pencil | Auto Rotating Lead Mechanism | Replaceable Push Button Eraser | School and Office stationery | Black Body, Pack of 3

A Special mechanical pencil with gears inside that revolve as the pencil lead presses down and lifts off the paper. Each time you write, the lead moves fractionally to maintain an even sharpness. The mechanical pencil with the revolving lead that STAYS SHARP.