The Tough1 Comfort Gait Dee Bit is 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. Made of stainless steel for strength, this horse mouth bit has an inlaid copper mouth and copper roller. This horse dee bit also has flush brass fittings in the pinch-less mouthpiece and cheek-pieces for more independent action from side to side. The gaited horse bit works with mouths that measure 4-1/2 inches to 5-1/2 inches.