These are some of the larger custom oversized u-bolts we have supplied. 1" diameter A36 steel material was used, hot dip galvanized, with approximately 4 inches of coarse thread. Inside width was 46 inches and the inside length was maintained at 48 inches. Our customer was in a big rush and we were able to get these two large custom u-bolts done in just 3 days. A pair of galvanized hex nuts and washers was included with each u-bolt.