Conduit Strut Pipe Clamps 5” OD To 5 1/4” OD Rigid Mix Lot New/Used 7 Sets 277J. Here is a chance to get some left over clamps at a good price. You get what you see in the pictures. This set of Superstrut conduit strut pipe clamps includes 7 sets of new and used clamps with a diameter range of 5” OD to 5 1/4” OD. The clamps are made of zinc-plated steel with a gold-colored finish and feature a screw connection type for rigid metal (RMC) conduit. These track mount clamps are designed as conduit fittings and accessories and are suitable for use in various electrical applications. They are sturdy and inflexible, making them ideal for providing secure support to RMC conduit. The clamps are manufactured in the United States and are compatible with a range of unit types.