Copper Lozenge Sweet Iron Raised Ribs Loose Ring Bit from Shires Equestrian is a training bit with useful features for many horses. The sweet iron and copper combination mouthpiece provides a warm feel and pleasant taste for the horse. The raised copper ribs foster increase salivation for a wet, comfortable mouth. Especially good bit for a dry mouthed horse. The loose ring cheeks and the lozenge encourage lightness and help prevent the horse from leaning on the bit. This Shires loose ring.