Communicating with your horse through the bit should be just a whisper, not a shout! The Whisper Shank Bit represents the next generation in synthetic bits. The patented plastic formula is specifically designed for this bit allows clear, gentle communication with the horse. The mouthpiece is slightly thicker than many synthetic bits on the market, and the unique design provides a quicker reaction time without being invasive to the horse. Great for schooling or showing, particularly for riders who have not yet developed soft, effective hands or horses that just need a change.Long Shank Sizing:8 3/4" from top of bit to bottom 6" from center of themouthpiece. The mouthpiece is 4 5/8".Short Shank Sizing:8 1/8" from top of bit to bottom 5 3/8 from center mouthpiece.The mouthpiece is 4 1/2".