The Glow in the dark barbecue thermometer with long 4 inch stem by Tel-Tru is designed for use on larger pits. This thermometer has a huge 3 inch Glow in the dark dial with a 100 to 500 degree temperature range. This allows you to read the thermometer from quite a distance away even during daylight hours. The stem is 4 inches long and .250″ Diam. to read temperatures from a little deeper in your smoker than the shorter version. Tel-Tru thermometers are proudly Made in the USA.