Classic Equine Tool Box Correction BitClassic Equine Tool Box Correction Bit Mouthpiece Width: 5" Bar Width: 1 2" Purchase: 2 3 4" Shank: 4" Cheek: 6 3 4" Port Height: 1 1 4" Width: 3 4" Features: Copper inlay The 6 3 4" cheek has a 2 3 4" purchase and a 4" shank. This ratio (the difference in the length of the purchase and shank) and the swept back design of the shank make this a mild cheek. Contact with the horses mouth comes slowly in the form of soft pressure to all points of contact.