UTC thread
I don't know if it's quality control or a new supplier UTC has been using, but for the past year or so, the quality of this product has been poor. The thread is not wrapped tightly or uniformly on the spool. When tying the thread under tension starts to dig in to the the loose wraps start to unravel in your hand while tying. I rate it two stars because I'm still able to tie flies, but it's not ideal.