Sample tags are extremely durable and suited for use in moist, hot or cold environments—withstands temperatures from –40 to 300°F (–40 to 148°C). Convenient 3" x 1" (7.6 x 2.5 cm) tags of brushed aluminum are easy to write on. Wire wraps easily to almost any sample type, or even industrial equipment such as cylinders, pipes, and valves.