COBRA Through The Roof, Lap Joint Nozzle Kit, Extrude The Bead You Need Extrudes A Wide Bead To Easily Cover All Kinds Of Lap Joints, Like Roof Flashing & Window Fins, Sandwich Joints Like Thresholds, Kit Includes 6 Tubes Of Sashcos Through The Roof Sealant, 2 Patented Cobra Nozzles With Caps & 4 Round Nozzles.