Zoo Med Creatures Dual Thermometer & Humidity Gauge 1 Count Pack of 2 hidden Can be used to connect Color:02 Black Black Black Black Black Black Can be used to connect carabiner or other climbing gear equipment Magnetic design: our acrylic nail display stands has designed with magnetic point under the display stand which makes it easier to secure the acrylic base and iron pieces on the top of display stand Zoo Meds Creatures Dual Thermometer & Humidity Gauge allows precise monitoring of both temperature and humidity in your invertebrate's home Temperature and humidity levels are extremely important for the long term health of your invertebrates