Thermochromic inks or dyes are temperature sensitive compounds, developed in the 1970s, that temporarily change color with exposure to heat. They come in two forms, liquid crystals and leuco dyes.
Thermochromic Bangers allow for you to physically see the temp of the banger based on how red/orange or yellow the "sand" turns.
Pack Size: 1 Banger
Glass Type: Quartz
Bucket Diameter: 28mm
Wall Thickness: 2mm
Bottom Thickness: 2mm
Joint Type: Clear