Quick view Fernco 6" Hulk Universal Coupling 8.00" to 6.20" HULK6 Compare $114.75 Strong. Flexible. Steel Reinforced Universal Coupling. - Connects two pipes having an O.D. range of: 6.20"-8.00" One coupling per nominal pipe size connects: Clay Concrete Ductile Iron Orangeburg Asbestos Cement Duriron Cast Iron... Add to Cart Add to Cart Add to Wish List Add to My Wish List Create New Wish List