MMF008 Shanks are ¼” Stainless steel, laser cut and hand finished. The bars of the mouthpiece are crafted from stainless steel also and have acute angle edges to create specific pressure when pulled to a vertical point. The port in the mouthpiece can be beneficial to horses that wad their tongue. The copper rings promote salivation. The design of the shanks and the mouthpiece placement creates a bit where the effect of the leverage is equal to the pressure of the curb strap. This offers the rider the ability to increase or decrease the amount of leverage with curb strap adjustment.