NMC TM35J Traffic Sign, Legend "SPEED BUMPS AHEAD", 12" Length x 18" Height, Engineer Grade Prismatic Reflective Aluminum 0.080, Black On White Legend "SPEED BUMPS AHEAD" Made from rust resistant material Great for long-term outdoor use J suffix is 0.080 aluminum material with engineer grade prismatic reflective sheeting with 2 center post holes Measures 12-inches length by 18-inches height