What is unique about this set are the " divots " shaped into them. They allow you to thumb catch on them, so when you are cranking down on a super steep wall like a 45 degree wall or a roof, you can lean out on them with precision since the thumb allows a little bit of pinch action on them. Nice and rounded with enough room to place both hands on every one of them along with being comfortable and functional. Just what Dr. Route Setter ordered.