From Sprenger of Germany (best of the best!), this is a newer model curb bit, the Bemelmans, and is becoming quite popular. the centerpiece is 16mm thick, in aurigan or sensogan, and is smooth and rounded in a way that is adapted to the sensitive palatal arch. The acceptance of this bit results in a soft and even distribution of pressure across the tongue. It is also much harder for the horse to get its tongue over the bit. This model has 5cm (shorter) stainless shafts (gives sharper response-for sensitive hands), and we also stock it with 7cm shafts.