Training Bit (Manufacturer Unknown) This bit is designed for use with Western-style working horses. Due to the port shape and lever action, it provides clear cues and a quick response. Not permitted for use in British dressage competitions. Please understand that this is for training and schooling purposes, not competition. Stamped "DH" (see photo). The manufacturer is unknown as it cannot be identified. While there is evidence of use, there are no functional issues. Please purchase only if you understand this. "※ I am also listing other equestrian equipment. Please take a look if you are interested."