Design: Using two reins, the Pelham is a combination between a Dee ring and straight shank. The Pelham has three rings on the shank: the top ring is for the headstall and curb chain, the center Dee ring for the first rein and the bottom ring is for the second rein. Function: Operates as both a direct action and leverage bit using a curb strap or chain. With pressure on the first rein, it works as a direct action bit, exerting the same amount of pressure on the mouth as on the reins. With pressure on the second or bottom rein, it works as a leverage bit, tilting the mouthpiece forward and applying pressure to the parts of the mouth, curb and poll. Usage: Used in English disciplines. Options: Patented bushing system which allows the shank to turn independently of the mouthpiece, purchase and headstall. The Low Port Mullen Barrel Level: Two, Three Design: Curved mouthpiece with upward curve and jointed barrel in center. Function:The Low Port Mullen Barrel mouthpiece offers a small amount of tongue relief. With rein pressure, the mouthpiece applies pressure on sides of the tongue and puts downward pressure on top of the bars. Uses more bar pressure than tongue pressure. Will not completely restrict the tongue. Each side of the mouthpiece moves independently. Turns into solid mouthpiece when asking for a stop. Usage: A mild bit, the Myler Low Port Mullen Barrel mouthpiece works well with intermediate and finished horses. With independent side movement, it is a good bit for bending, or for lifting the horse which gets behind the bridle. Also, it is a good bit for stopping and works well for horses which need some tongue relief, encouraging the horse to relax at the poll.