The OEM Pentel Twist Erase Click Mechanical Pencil features a side-click lead advance and a transparent barrel design for easy visibility. Designed with a latex-free comfort grip, this pencil allows for effortless lead advancement with a convenient side button. The 0.5mm HB lead is equivalent to a No. 2 wooden pencil, making it suitable for standardized tests. Additionally, it includes a refillable twist-up eraser for extended use and is compatible with Pentel Super Hi-Polymer Lead and E10 jumbo refill eraser.