Classic J3 1.14mm shape. Comparing to:
1. J3 white 1.14mm-Flex has more attack and bite-more mids and bit more clarity
2. J3 Pitch black 1.14mm-Pitch black is more sharp in edge. Flex has less bite, less attack, more mids, more clarity (not always a good thing of course)
3. Purple 1.14mm J3- Flex has more mids, more clarity, less attack. Purple and pitch black are very similar.