These National Marker SAFE-T-PADDLE STOP/SLOW Signs feature 0.040in. thick aluminum with baked-on enamel on both sides for long-lasting indoor/outdoor use. Use these signs to grab the attention of drivers and prevent traffic incidents. Coated with Sign Muscle, these signs are protected against graffiti, chemicals, scratches, and fading. Come standard with radius corners and pre-drilled mounting holes. Can be easily mounted on a wall or fence.