Review of the Pentel Tri Eraser

Had passed on this eraser 2-pack after seeing it retail for $4.99 at Office Depot. Though I decided to try it after finding it at the Target Back to School supplies section for $2.39.
The Tri Eraser body and its triangular refill. Several premium graphite pencils were used to draw lines and sample swatches to test the performance of the Pentel Tri Eraser compared to my current favorite: the Pilot Foam eraser.
The Pentel Tri Eraser can erase very narrow trails across the test graphite swatches thanks to the sharp edges of its triangular profile, and its ergonomic barrel is quite comfortable to hold and easy to control.
This eraser works nicely to correct mistakes in tight areas which could be useful for writers, but it tends to leave a lot of erasure debris on the surface of the paper that can not simply be shaken off but needs to actually be brushed off.
The Pilot Foam eraser is my current choice for my daily sketching kit for its compact size, efficient gentle erasing on most paper surfaces, and self-cleaning performance. Its debris neatly rolls into strands that are easily removed from the work area. It can erase a wide trail across the sample lines and swatches with ease without damaging the paper or leaving a mess behind.
At the last second decided to add my Boxy eraser to this comparison test, and it cleanly erased a nice narrow trail across all the graphite swatches while neatly rolling the erasure debris into an easily removable single strand.
Ultimately the Pentel Tri Eraser works ok, but it is clearly outperformed by the Boxy and Pilot Foam erasers. The choice is clear for drawing and sketching applications.