These do a GREAT job erasing

I am in college now and the top breaks off easily when erasing.

On the top of a pencil, these erasers make erasing small areas more easy and accurate that a block eraser.

These erase really well, but unfortunately, of the three I have used from this pack, two of them have already broken in half--and this is with normal, not-hard erasing.

They give that nice 100% erase as long as my lines weren't drawn too hard

Although these erase and clean effectively - the ends have cracked and torn on every pencil I've used them on.

Good quality - erases without leaving behind messy rubbings.