The 12 year olds at the party LOVED THEM! we had them in the goodie bags. But, as for 'erasing' ... it would get a mediocre from me! The kids planning they were just splendid! - C. Chandler "Mama of the CHANDLER CLAN" We added these to favor bags for my daughter's 7th birthday. The girls LOVED them, and they work just fine as standard erasers. For the price, they are a fun add-on for events like this. I'd imagine they would have made splendid prizes in my pre-k classroom when I was teaching too! - MNee These erasers go on basically. I've gotten some in the past that were just difficult to get on pencils. These ones are ideal. They make great party privileged behavior, classroom rewards, or stocking stuffers! - E. Kennedy We gave these made known as part of the handle bags at my daugter's birthday have fun. All of the kids planning they were sweet cool. - H. Oneal "redhead" I bought this is as a birthday b...