Missing critical feature!  READ BEFORE BUYING
This only has one part that rotates.  Once you get the two strands twisted up,  you have to MANUALLY twist it in the opposite direction to twist the two strands together!  So annoying.  Most all other ones out there have two twist features - one for the individual strands and the a reverse for both strands together.  Very disappointed.  Returning.
Rating: 2 stars