I was a scrapbooker for several years and had 5 of these pens, using them very very often. Then for 5 years, these pens sat in a box. I discovered them when moving house, and gave them a try. Good as gold! I still have 3 of them, and they still have life in them after 10 years since original purchase! I have discovered drawing and colouring & think I may indulge in some new ones!