The nice feature of this snaffle is that it can be a full cheek or a short shank snaffle with a curb chain.  To use as full cheek, put head stall and reins in the middle ring and it becomes a full cheek snaffle.  For a short shank snaffle put head stall and curb chain in top rings and reins in the bottom rings.  A great bit for transitioning a young horse from o-ring to a shank snaffle. Size: 5" mouth, 7" overall shank measurement. Stainless steel with copper inlay.