Professional's Choice Derby Bit 6.75" Smooth Medium PortThis fixed cheek leverage bit is well suited for a finished horse. This shank creates lateral flexion and provides hip control which allows the horse to maintain balance while keeping their shoulders elevated during turns. This mouthpiece has smooth flexible bars that are softer on the corners of a horses' mouth. The slightly taller port moves freely at the joints and relieves tongue pressure. This is a good bit for speed events. Mouth: 5 3 4" Cheek: