This 1000 ft roll lets you put up an instant warning parameter to mark dangerous construction work-in-progress, obstacles, hazards just about anything that creates a safety risk. This roll specifically calls out the dangers of crystalline silica dust to ensure hazardous area is marked off and appropriate personal protection equipment is worn by anyone who is within the work area. Empire® level is the leading designer and producer of levels, squares, layout tools and caution tape in the United States with dominant market share in the retail, contractor supply and do-it-yourself markets. Milwaukee® Barricade Tape, Premium, Legend: Danger Silica Dust, Red, 3 in Width, 1000 ft Length, 3 mil Thickness, Plastic