This Poponcini 2.5 ring horse bit comes in either Harmony 1 or Harmony 2 wrapped in copper. The standard color is blue, but it is available in black by special order.
The copper wrapping has a two fold effect. First, it makes the bit a little less flexible at the edges. Second, it makes them less prone to chew damage which makes them more durable as well as helps them to salivate more.
Made in Italy