This bit was designed for practice and slow work. The 3 Piece Dog Bone mouthpiece has more direct contact in the corners of a horse's mouth giving you a quicker response. The long shank offers plenty of whoa while maintaining the flexion and bend required.The Extended Gag Feature offers bend and flexion of the poll. If you ride with a combination bit, this is a good alternative to practice in. By doing this, it helps maintain the effectiveness of your combination bit.This bit comes with a chain curb but can be used with a nylon string curb as an option. With a string curb you will have more bend but less whoa.