Stainless steel parallel clamps are designed for use with both rigid and PVC-coated conduit. Parallel clamps are used to run pipe or conduit parallel to the flange of I-beams or channel simply and easily without drilling holes.Material:-Body: CF8M (316 SS)-Bolt: 316 SS-Hex Nut: 316 SSBody 100% made in USA; bolt and hex nut may or may not be of U.S. origin.