Do me the pen once borrowed and was so excited that I wanted him myself buy. At first I was scared of the price, but then I got him worried me. Is very good in the hand and makes it easy to write with incredible fun. According to the price of the pens is excellent processed. Refill cartridges with 4 Although usually more expensive than a simple ballpoint pen but find the writing experience made it worth it. A ballpoint pen for life.