User blog comment:Jojo-a-gogo/What do you guys think the chain on Kurapika's pointer finger does?/@comment-5242743-20121212014900

here's a thought maybe he hasn't fullymastered his ability to its peak and hasn't made an ability for it yet

remember gon and killua mastered nen in greed island but still could make new abilities they haven't tried yet (like killua's ability to use electricity for synapsis or Gon's rather vague ability to become an adult and become over a hundred times stronger)