Professional's Choice Bob Avila Correction BitProfessional's Choice Bob Avila Correction Bit Mouthpiece Width: 5" Bar Width: 3 8" Purchase: 3" Shank: 5" Cheek: 8" Port Height: 2" Width: 1" Bit Material: Copper bars The four moving parts allow the horse to respond to subtle rein pressure which greatly reduces heavy rein handling. This bit can be used in any western discipline. NOTE: This bit will rust when exposed to moisture. This creates a sweet taste in the horse's mouth and promotes salivation.