According to the demands and necessities for bike sharing programs worldwide, chains for public bikes must be extremely strong and rust resistant to ensure safety, comfort and minimized maintenance. The KMC City Hunter Chain has a unique oval-shaped outer plate with a durable structure to improve transmission efficiency and strength which in turn reduces chain wear resulting from overuse; XX StretchProof Hollow Pins provide safety and lightweight comfort under heavy load; the nickel outer plates and color-coated inner plates provide rust protection, while reducing maintenance frequency. Also, the visible shiny color can enhance rider safety.