This Reinsman bit is one of the Tyler Magnus Ring Slide series bits with a large chain mouth. It's designed to give both the rider and horse the confidence needed for the horse to break at the poll. It also has enough leverage for stop and shoulder control at a confident pace. This chain mouth bit is a great starting bridle for a mature horse to gain willingness and confidence. What's great about this bit is it's made in the USA and has a lifetime guarantee!