Double jointed MAX control water snaffle. 14mm thick. 11.5cm wide. Material stainless steel. The appearance of a MAX control bit is almost similar to a regular double-jointed bit. With the MAX control bits, however, at a certain pressure, the mouthpiece blocks and turns into an unbroken rod. When this pressure decreases because the rider's hand can relax, the function of a normal double-jointed bit returns. This gives you more control when a horse becomes very strong.