Neue Schule Waterford Nelson Running Cheek Gag 8029NG Bit Size:5.25" 133mm and the inclusion of all and the inclusion of all vitamins and minerals needed by older horses ensures this supplement offers all round health The eggbutt cheeks offer a better level of stability for the bit within the mouth giving more control over the shoulder and preventing horses from grabbing onto the mouthpiece The Waterford Nelson Running Cheek Gag is fantastic for use during faster work such as cross country jumping but should only be employed by knowledgeable riders as misuse of this strong bit has the potential to cause oral damage