Fernco® Repair Coupling, Strong Back Flexible, Series: 1051 RC, Fitting/Connector Type: Coupling, 6 x 4 in Nominal, Asbestos Cement Fiber/Ductile Iron x Cast Iron/Plastic, 5.92 in Length, 4.3 psi Tested, PVC, 140 deg F
Designed for resistance to heavy earth loads and shear forces, while providing improved pipe alignment.