I looked for these pins on a recommendation from a friend and ordered. My daughter is in the school year. Pin Retention was from the beginning a problem. Some get advice and talk again, but that helps even in the long run nothing, especially the child does not want to write soon. Locate the pins great, got myself also the mechanical pencil. Lo and behold, she takes the pen correctly in the hand and is now even with the normal pins off to keep him properly. She is also very proud of myself that keeps the pen right now. So a clear must for pre-school children, or perhaps even earlier.
