Twist Erase Click Mechanical Pencil features a side click lead advance, transparent barrel design and a latex free comfort grip. Convenient side button allows the 0.5mm lead to advance effortlessly without changing hand position. Turn dial left to advance eraser, and right to retract. The refillable, extra long twist up eraser feature allows for longer use. Mechanical pencil is refillable with Pentel Super Hi-Polymer Lead and E10 jumbo refill eraser.