Identify junction boxes, switches , circuit breakers, raceways, pipe, conduit and fuse boxes; Non-conductive for user-safety; High-adhesion properties with easy removability; Vinyl-impregnated clotch construction provides long-lasting durability; Resists abrasion, moisture, dirt and oil; Non-smear, black legend on bright orange background for high visibility; Temperature range from -40 degrees F to 180 degrees F, (-40 degrees C to 82 degrees C); Adhesion is 45 oz./in. width ultimate. Medium legend has four markers per card 1.125 inches by 4.5 inches with 3/4 inch type.