Mr. Pen- Retractable Mechanical Eraser Pens, 4 Pack, Vibrant Colors, Latex-Free Precision Pencil Erasers for Artists, Students, Drawing, Sketching & Drafting

I draw a lot and I find these retractable erasers practical. They clean all traces of pencil.

1 of the 4 does not hold the eraser in place as the ratchet piece is very flimsy. The other 3 work great. I do a lot of suduko, so need erasers!

This set of erasers is perfect for erasing in small areas. It fits in my pencil case with my other pencils neatly and compact.

Good for kids and adults. Easy to hold and use. Focuses the erasures.

Nice but when I cancel a lot on my paper the rubber turn into the pen

We received a four-pack of the Mr. Pen Retractable Mechanical Eraser. On two of the units, the locking mechanism had to be messed with to lock in place to keep the eraser from retracting while using it. The other two worked as expected. I am not sure if this is a design flaw or improper tolerances in manufacturing. Either way, it can be annoying if you get one you have to fuss with. When they are working well they feel good in your hand and erase well. A little bit more attention to detail and these can be very good. I hope they get it sorted out.

I'm not real good at crossword puzzles, so these erasers are extremely useful, especially when my pencil-attached erasers are worn out.

I have never used retractable erasers before and thought I'd give these a try. I'm glad I did. I found that they did a great job without having to use much pressure and there were no smudge marks left behind. I found no issues with how the units themselves worked and it was nice that there were refills included.