Single jointed bits Single jointed bits forward the riders rein aids to the tongue-edges and the lower jaw bones. When giving a rein aid the bit forms a V-shape and exerts pressure to the tongue edges. This can be described as “nutcracker” action. The V shape may cause problems for horses with a flat palate and small oral cavity or if you choose a too large bit size for your horse. In these cases the eye of the joint might press into the sensitive palate which is uncomfortable for your horse and could even cause bruises or injuries. Standard single jointed bits have a production related characteristic: one part of the mouthpiece is longer than the other which results in stronger influence on one tongue edge. To prevent exerting uneven pressure in the long term you should turn the bit around periodically. If you want to avoid the problem of exerting uneven pressure due to a single jointed bit you can use our Turnado or single jointed Dynamic RS bits. The joint of these bits has been turned forward by 45 degrees in order to guarantee an even distribution of pressure on both tongue sides. Double jointed bits Compared to single jointed bits, double jointed bits distribute the pressure from rein aids more evenly and over a wider surface onto the tongue, without exerting pressure to the sensitive palate. All double jointed bits from Sprenger made of Sensogan and Aurigan are anatomically adapted to the horse’s mouth. The middle link has been shortened and angled forward in order to make it more comfortable for the horse and to achieve the best possible effect.