Power-Strut PS1100 4 STD For 4” Pipe Rigid Steel Conduit Clamp Complete NOS 275V. Some of them are the same just another company or color New old stock complete with nut and bolt. This Power-Strut PS1100 4 STD clamp is designed for 4-inch rigid metal conduits. It's a complete, new old stock item that comes with bracket mounting for easy installation. The compression connection type and steel material ensure durability and long-lasting performance. The clamp is available in many colors and features a unit type of a conduit clamp accessory, which makes it a great addition to any electrical equipment and supplies inventory. The rigid flexibility of the clamp is ideal for industrial and commercial settings. Made in the United States, this is a top-quality product that guarantees quality and safety.