Designed to match the Gold Medal Pro Cog, the EAI Gold Medal Pro Chainring as a complete set could be one of the elite track racing drive trains. Don’t let the name fool you (Euro Asia Imports), this chainring is handmade in the USA, using stainless steel, heat treated with a hardness scale of RoC 45-47. The EAI Gold Medal Pro Chainring is available in 46t – 53t, while the picture above is a prototype. Releasing 2010. Via Prolly Is Not Probably.