''This mouthpiece offers similar benefits of the twisted wire snaffle with added flex and bend. 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.''-Brittany PozziThis Combination Series bit has 3'' Rings.Size: 5 1/2''