We had these when we were kids, and that's why I wanted to get them for my nephews.  They broke them by the second day, but having had them we were able to rig them fairly easily. The metal tab that hold the actual bow on broke off, and we replace it with a bigger piece of metal.  Then on the other one, the string holder broke and we replaced it with a washer and a boot shoe lace because there wasn't enough slack to retie the string.  It also allowed us to slow it down a bit... These are pretty fast little darts.  I am giving 4 starts because, with simple fixes they will last a long time.  They would have gotten 5 if they hadn't broken so quickly.