Membrane Attachment To Steel And Wood Roof Decks. Advantage: Engineered Barb Design Provides Maximum Wind Uplift Rating. Material:AZ55 Galvalume Type: Round Diameter: 2", 2-3/8" Thickness: 0.032" Packing: 1000Pieces/Carton Why Choose Us: 1. 25+ Years' Experience In Cast Iron Roof Drainage And Floor Drainage Production 2. One Automatic Casting Production Line Exclusive Produce Roof Drainage And Floor Drainage 3. Li Has QC Manager Approval And He Has Strict Requirements For Product Quality OEM: Acceptable Supply Full Set Roof Drainage And Floor Drainage Products In 1 Stop. Include Cast Iron Soil Pipe And Fittings, Flexible Coupling, Heavy-Duty Coupling, Roof Drain, Roof Outlet, Retrofit Roof Drain, Floor Drain, Area Drain, Floor Sink, Downspout Boots, Downspout Nozzle And Flange, Fasteners, Plumbing Hangers, Riser Clamps, Deck Screws, Stress Plates And Reciprocating Saw Blades.