Thexton 106 Cold-Chek Professional Anti-Freeze Tester

* Professional disc-type (16 1/4") tester is accurate at all temperatures
* Tests ethylene glycol based coolant, hot or cold, including Dex-Cool
* Easy to read discs are magnified by convex design of the clear SAN plastic barrel
* Celsius and Fahrenheit scales
* The “6th disc" shows overprotection and a loss of cooling efficiency
* Beyond 70% anti-freeze, cooling & corrosion effectiveness is reduced
* One-piece bulb and neoprene dip tube