Reinsman junior cow horse chain mouth bit. 5" sweet iron chain link mouthpiece. 5" cheeks with gag effect.
 
"It helps to get your horse's legs underneath him and his rear end down. The short gag action collects a horse very well. The small chain mouth conforms well to the bars and tongue making it comfortable for your horse to pack. This bit has light control and is excellent for training or relaxed pasture riding."