Schneiders® Smooth Barrel D-Ring BitThis Smooth Barrel D Ring Bit is a great bit for horses and riders of all ages and skill levels. A good bit to introduce as a first bit to young horses. Slightly curved smooth mouthpiece alleviates some tongue pressure and allows the horse to swallow freely. Pressure is also applied to the bars of the mouth. Stainless steel Rings: 3 Bit diameter: 11mm