Schneiders® Sweet Iron O-Ring Square SnaffleJust the right amount of leverage to keep horses from leaning on the bit Great for teaching horses to balance and carry himself correctly Square mouthpiece sends a much clearer signal to the mouth Stainless steel rings with a sweet iron mouthpiece Sweetness of the mouthpiece increases with oxidization Mouthpiece: 5 Rings: 3 1 2" Bit diameter: 5 16"