Power Strut PS 1100 2 1/2" Pipe Clamp Rigid Thin Wall For Conduit NIB 276X. Some of them are just another company or color but all are the same size. New old stock complete with nut and bolt. This Power Strut PS 1100 pipe clamp is perfect for securely holding rigid metal conduit. With a track mount and screw connection type, this zinc-plated steel clamp is designed for use with 2 1/2\" diameter conduit. It is brand new in box, never been used. The accessory type is a conduit clamp and it has a rigid flexibility. It is made in the United States and is suitable for use in a variety of industries including electrical equipment and supplies, wire, cable, and conduit, and business and industrial settings. This item is a unit type and is suitable for use with thin wall conduit.