This 7 Shank is 6 ½" long and has quite a bit of weight behind the mouthpiece, which allows a quick release from the rider's hands. This is an excellent transition bit out of an o-ring or d-ring.

This 5 1/8" square spoon port mouthpiece has a 1/2" wide port. The width of the port is comfortable for the horse while encouraging collection. Port: 1"