Quick view Fernco PVC 4" x 4" Flexible Coupling & Shear Ring (Clay x CI/Plastic) Compare $33.13 Joins two pieces of pipe STRONG BACK SERIES Coupling 4.50" x 5.25" (inside diameter) .12" Stainless Shear Ring Four Stainless steel spot welded clamps with 5/16" Nuts Tighten to 60 lbs. torque Drainage applications... Add to Cart Add to Cart Add to Wish List Add to My Wish List Create New Wish List