125. Sudenga rates them as 7500. We had the head, elbow and tail. They weren't able to provide trunking in a reasonable amount of time and apparently don't even keep replacement chain on hand. We had a welding shop laser cut and bend the trunking along with AR400 liner sheets and built our own chains for a fair amount less. Lundell plastics cut paddles for us in a very timely and affordable manner. Definitely recommend them.