Cobra Lap Joint Nozzle System with Through the Roof! Sealant - California Lower VOC

You need a flat caulk bead, you have a round nozzle. The Cobra Nozzle extrudes a wide bead to easily cover all kinds of lap joints, like roof flashing and window fins, and sandwich joints like thresholds. 1-1/4 In. W. x 1/8 In. H. It comes with a 6-pack of Through the Roof clear sealant, well-known for fixing and preventing leaks. Together they help you do your best work.