The 3.00" SDR E-LOC Coupler by Duraline is expertly engineered for simplicity and efficiency, allowing for an easy one-person installation process. Designed specifically for use in pipe and conduit applications, this coupler features a fast push-on installation method, making it an ideal choice for various projects where low pull-out strength is adequate. With a nominal outer diameter of 3.5 inches, it accommodates an OD working range of 3.482 to 3.518 inches, ensuring compatibility with your plumbing needs while being cost-effective. While this coupler is not recommended for blowing or plow chute applications, its robust design and BABA compliance make it a practical solution for connecting HDPE pipes effortlessly.