Stainless steel with inlaid copper mouth and copper roller. A gentle, pinch free mouthpiece that extends beyond the horse’s lips for better communication, plenty of tongue relief, and resistance free action across the tongue, bars, and lips. Flush brass fittings in the pinch-less mouthpiece and cheek pieces with smooth, independent action from side to side. Fits 4 1/2” to 5 1/2” mouths.