Smooth
This is my second metal device and this one is definitely smoother than the first one was. My favorite part is that the ring is not perfectly round. The little bit of angle on the bottom makes it much more comfortable.<br /><br />The metal ones like these AR a much better option and do not have a padlock clanking around on top of it all the time<br /><br />It does come with two keys in case you lose one.
Rating: 5 stars