Trut Sweet Iron Liverpool 3 Slot Non-Fixed Slow Twist Lock-16

The locked mouthpiece looks like a single-jointed bit, but it cannot fold as much as a normal single-jointed bit. When counter-pressure is applied, the bit locks, turning it into a straight bar and making it sharper. When there is less pressure on the reins, the bit changes back into a single-jointed bit. This makes it an ideal bit for horses that lean on the hand or pull through the hand.