The locked mouthpiece resembles a single-jointed bit, but it doesn't fold like a regular single-jointed bit. When pressure is applied to the reins, the bit locks, turning into a double-jointed bit and becoming a sharper bit. With less pressure on the reins, the bit reverts to a single-jointed bit. This makes it an ideal bit for horses that resist the hand and move through the hand. This bit is not suitable for inexperienced riders.

This cheek piece has a D-shape. The D-rings ensure that the mouthpiece sits comfortably and securely in the mouth. The pressure of the D against the cheek facilitates steering, as the head is automatically pushed in the right direction. This makes the bit suitable for young horses, for example. The shape of this cheek piece makes it more difficult to pull the bit through the mouth.

 The Sweet Iron bits are made of steel and have a distinctive blue color. Sweet Iron develops surface rust through contact with (air) moisture, which has a sweet taste and naturally stimulates the horse's saliva production. This causes the horse to foam more, which improves acceptance of the bit. This rusting process (oxidation) changes the blue color of the TRUST bits to a brownish-gray.

TRUST equestrian bits are quintessentially Dutch. All bits are designed, developed, and handmade in the Netherlands. A team of technical professionals works on their production daily. The bits are assembled with the utmost care and made from the finest materials. This ensures high quality control and standards. Each design continuously considers the balance between shape, material, and weight. TRUST bits are slightly curved, allowing them to conform better to the horse's mouth. This anatomical shape allows the bit to fit more comfortably in the mouth and distributes pressure more effectively. With a wide selection of mouthpieces, cheek pieces, and materials, TRUST strives to offer a suitable bit for every horse.