''The combination is a great transition from the o-ring. The combo uses the rope nose and gag to simultaneously ask the horse to break at the pole and give you more leverage. I like this bit for training, tuning, and competing. I love this medium twist and ride it on just about everything. It is a great size; not too harsh, but just enough bite if you need it. '' - Brittany PozziThis Combination Series bit has 3'' Rings.Size: 5 1/2''