10 inch Cheeks, 5 inch Mouth. 7/16 inch Twisted Sweet Iron Snaffle. This is my favorite bit to run a horse that has a tendency to overrun the first barrel. This bit is unique as it has enough control to help you get tight barrel turns, and it is very well accepted by horses that may not be used to so much control. There is lots of inchgive inch to this bit with the curved mouthpiece and the gag effect on the shanks. The first time, adjust the curb chain a little looser, then tighten it accordingly for more control.