The 1-1/4X3/8 FS 3M SW INSERT by Capitol Manufacturing is designed for seamless integration in plumbing and industrial applications. With dimensions of 1-1/4 inches by 3/8 inch, this insert is perfect for reducing pipe sizes while maintaining a secure connection. Constructed from high-quality materials, it offers durability and resistance to wear and tear. The 3M SW design ensures compatibility with standard fittings, making installation straightforward. This product adheres to industry standards, providing peace of mind regarding safety and performance in your fluid systems.