These are custom 316 stainless steel round u-bolts we supplied to our customer at a bit over 100 pieces. Lead time was at about 6-7 business days from order and material certs with certificate of conformance were provided with the parts as well per our customer's request. The inside width is 2-5/8", inside length is 5", and approximately 3-1/2" of thread are incorporated at each leg. Rush service is available upon request.