Classic Equine7 inch Rasp Performance Series Straight Shank Bit with Ported ChainStainless steel cheek and copper inlaid ported chain mouthpiece.Mouthpiece designed for comfort and pinchless use. Allows for tongue relief, flexibility, and bend.Encourages the horse to break at the poll.Best used for well-trained, finished horses.This product can be identified by RPSBIT7SS32 Classic 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 ported chain, making it accessible to all riders.