HIGH-QUALITY ALUMINUM: Our surveillance sign is made out of premium materials with high-quality prints and the letter are clear to read, indicating there is 24-hour video surveillance inside. EASY MOUNT: The 6 pack aluminum surveillance sign has 4 pre-drilled holes and easily installed on every surface. No adhesive or special tools needed. LONG LASTING GRAPHICS: Printed with high quality inks that can withstand the outdoor elements and will not fade for years indoor or outdoor use. The warning sign features a reflective material that will glow when struck by lights. PERFECT SIZE: This large 7"x10" sign displays a large font and image. GUARANTEED QUALITY: High quality, heavy-duty and BUILT TO LAST! Made by Excello Global Products. We are a family owned USA company and we have been making quality products for over 50 years.