Weaver Equine Professional Antiqued Shank Correction Bit with 5 in. Low PCB 1045 PROFESSIONAL CHOICE 7 SHANK COLLECTION SQUARE PORT Professional's Choice Bits & Spurs Professional's Choice Long Shank Twisted Wire Bit. Professional's Choice Derby Bit 6 1 2" Shank with Twisted Low Port Mouthpiece Width: 5" Bar Width: 3 8" Purchase: 3 1 2" Shank: 4" Cheek: 7 1 2" Port Height: 1" Width: 1 1 2" Gag: 1" This 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 maintainbalance while keeping their shoulders elevated during turns. The twisted wire is more effective on the bars and the lower port is mild on the palate, making it very effective for keeping a horses hip shaped during a run.