Classic Equine Rasp Performance Series Straight Shank Bit with Smooth Bar6 inchMild cheek design with a swept-back shape 2-1/2" purchase and 3-1/2" shankRatio that provides gentle pressure on all points of contact with the horse's mouthPrimary contact point is the corners of the mouth, similar to the O RingSuitable for use with a training fork or martingale to encourage collection and poll controlCopper inlays on the mouthpiece stimulate salivation Mouthpiece is 5-1/8" wide and 3/8" in diameterCurved shape of the mouthpiece ensures soft, evenly distributed pressure on the bars, tongue, and corners of the mouthThis product can be identified by RPSBIT6SS20Classic Equine took its best-selling, tried-and-true, traditional Toolbox bit designs and added the rasp-look trend to the most popular styles, including this performance straight-shank bit with smooth bar, making it accessible to all riders.