Professional's Choice Magnetic Pol PieceThe Magnetic Poll Piece attaches easily to headstalls and halters behind the ears and has a unique rubber backing to prevent slipping. The Magnetic Poll Piece promotes a calming and anti inflammatory effect and has been helpful on horses with stall habits, can ease discomfort from TMJ, as well as teeth grinding. Can be worn prior to competition to help relax a nervous horse and promote a more focused performance.