The OEM Pentel Twist-Erase Click Mechanical Pencil features a side-click lead advance and a transparent barrel design for easy visibility. It includes a latex-free comfort grip and a convenient side button that allows the 0.5mm lead to advance effortlessly without changing hand position. The HB lead is equivalent to a No. 2 wooden pencil, making it suitable for standardized tests. Additionally, the pencil has a refillable, extra-long twist-up eraser for extended use and is compatible with Pentel Super Hi-Polymer Lead and E10 jumbo refill erasers.