Flex nibs, while still widely available in dip-pen form, are quite rare for modern fountain pens. This is due, in part, to the decrease in popularity of script styles using flex pens during the early 20th century. At this time, there was a move towards more rigid nibs. Another factor leading to their decrease in use was the level of skill required to ensure no damage to the nib's tines. The Pilot Namiki Falcon is an example of a modern pen with a somewhat flexible nib, although its degree of flexibility is very moderate by vintage standard, reducing the danger of damage and difficulty of use. An even more flexible contemporary pen is the Pilot Custom 742 and 743 with Falcon nib. These pens are much more flexible than a Pilot Falcon (aka Namiki Falcon).