Metal Made in the USA or Imported Lightweight stainless steel D-Ring snaffle features sweet iron mouth that easily rusts, which encourages salivation from the horse and acceptance of the bit. D-ring snaffle helps prevent pinching, while copper rings adds light tongue pressure for better control. Satisfaction Guaranteed. Lightweight stainless steel D-Ring snaffle features sweet iron mouth that easily rusts, which encourages salivation from the horse and acceptance of the bit.