Danger- Enter At Your Own Risk (Skull and Crossbones) Sign Whether its for a teenager's room or for Halloween decor our novelty danger signs are a fun addition to your decor. Visible day or night.  HIGH QUALITY AMERICAN SOURCED ALUMINUM - Made from high quality 5052 H38 grade aluminum, these long-lasting lightweight aluminum signs will not rust. 3M CERTIFIED SIGN FABRICATOR - Interstate SignWays exclusively uses 3M sheeting, inks, and laminate. Reflective sheeting allows for night time viewing. Every sign is covered in 3M UV protected laminate to preserve the sign surface from weathering and abrasion, keeping your sign good looking for years to come. EASY TO INSTALL - Signs have rounded burr-free corners for safe handling. Universal pre-drilled holes for easy installation. Mounting hardware NOT included. SIGN SHOP- Don't see a sign you want? Want a different color? We are a sign shop, so just contact us and we would be happy to make a sign for you at no extra charge.