These specialty stainless steel u-bolts were manufactured domestically using plain 304 stainless steel material.  The 1/2-13 thread was incorporated at 1-1/4 inches on both sides with the thread cut, as opposed to rolled.  Unless the customer specifically requests rolled thread we typically always use the cut thread as the default option.  The inside depth measured 3 inches and the inside width is 2-1/16".  A rush fee was paid by the customer to get the custom u-bolts completed within 2 days from order.