AGPtek 3" Christmas White Camping Cook BBQ Smoke/Pit/ Grill Thermometer Temp Gauge These are stainless steel and very easy to install, as you just insert the stem through the hole on your pit/ smoker/grill and then attach the nut, which is included. If your pit does not have a hole, you can just simply drill a 1/4 " hole and attach the BBQ Pit thermometer as previously described. These thermometer ranges from 100 degrees to 550 degrees Fahrenheit in cooking temperature. You will not be disappointed with this item, so please BUY with confidence. Please feel free to ask any questions concerning this item.