The 1.660 INSR SMOOTH SDR10 .166W from Dresser Industries is a precision-engineered insert designed for seamless integration into SDR10 piping systems. With a diameter of 1.660 inches, this insert features a smooth finish that minimizes friction and enhances flow efficiency. Constructed from high-grade materials, it ensures durability and resistance to environmental factors. This insert is ideal for applications in water distribution, irrigation, and other fluid transport systems, providing a reliable solution for maintaining system integrity and performance.