According to Ed Fagan, the material will be supplied in their standard 12” roll. Since the production is almost at the end, the best they can do is report the hardness once material is complete. The values cannot be guaranteed. For future requirements, all questions have to be discussed up front prior to placing order.
Yes, we should get all requirements from GFI before we place an order, but I have no idea who is asking you to order it this time.
The inner hole of coil is 12"(30.48cm) and we will provide you the material information once they are available