Bridger #3 formed inside laminations. The kit comes with 24 pieces, which is enough to modify 12 traps. Formed laminations offer greater strength than straight laminations, as they wrap the radius of the traps jaws. These laminations are made out of 3/16" rod. Laminations greatly increase the strength of the trap jaws. They also spread out the spring pressure over a wider area, and greatly reduce paw damage. Great for live market.