Filet à aiguilles double brisure features solid stainless steel washers and a soft iron mouthpiece with a "sweet iron" coating (blue). The soft iron coating on the mouthpiece stimulates salivation. When this material reacts with moisture, heat and air in an oxidation process, the surface rust has a sweet taste. This promotes acceptance of the bit. Eventually the blue color disappears, but the taste of the surface rust remains.
The anatomical design follows the shape of the horse's mouth, creating a smooth, even pressure distribution. With a double-break barrel, the bit consists of three pieces, the middle of which lies flat on the tongue. This creates more pressure on the tongue than with a single-break bit. The thicker the middle section, the greater the pressure on the tongue. Barrel thickness 14 mm. Rings 65 mm.
The needle fillet has two rods, also called needles, located in front of the rings. The needles exert pressure on the cheeks, accentuating the steering aids and ensuring that the rider cannot pull the bit out of his mouth.