RM-903 6" Cheeks 5" Mouth. 3/8" 3-Piece Twisted Wire Dog Bone Snaffle. Wonderful for older colts young horses or any soft mouthed horse. Contacts the nose to tuck it then gently picks up the mouth until the curb tightens for gentle but all over "nose bars lips chin and face control. Works well with any type of martingale or draw reins. It comes with LIFETIME GUARANTEE from the manufacturer - REINSMAN.