XFasten Duct Tape Silver, 5.8mils, 2 Inches x 50 Yards Heavy Duty Duct tape that can be used for long term repairs, sealing, bundling and marking; has long shelf life and retains strength for up to 2 years on both outdoor and indoor applications. Reinforced rubber adhesive sticks well to metal, plastic, concrete and on smooth, contoured and textured surfaces. Thick surface allows extreme conditions and heavy exposure to harsh elements yet is still easy to tear and install, remove or reposition. Silver polyethylene surface layer is moisture, weather, abrasion, heat and UV resistant for long term application at harsh conditions and is compatible with marker pens for labeling. Conformable, easy to tear by hands, bendable and flexible making it ideal for varying shapes in ducting, packaging, storage as well as arts and crafts projects.