Professional's Choice 7 Shank Collection - Dogbone BitThis 7 Shank is 6 long and has quite a bit of weight behind the mouthpiece, which allows a quick release from the riders hands. This is an excellent transition bit out of an o ring or d ring. The 5 1 8 dog bone applies more pressure to the outside of the bars, encouraging more flex and bend than a traditional two piece snaffle. This dog bone also has a roller in the middle, a great soothing tool for an anxious horse. SKU: PCB 1042