http://northeastrodbuilders.com/blankflex.html
These are pictures of he URJ 601 and URJ 602 with 5-15#'s hangning off the line. I am waiting for a new shipment of URJ 500's & URJ 603's so I can perform the same bend test and post the pictures. Once I recieve the URJ 500's, I will be able to give you more information on that blank. I suspect that it is a 5' version of the 603, that is wha tI've been told from teh person who designed the blank, but I will wait to pull on teh blank and post pctures of the 2 side by side so you can come to your own conclusion if it works for you.