Thexton THX106 Cold-Chek Disc-Type Anti-Freeze Tester

Features and Benefits: Large professional-size (16 1/4") tester is accurate at all temperatures Tests coolant hot or cold Easy to read discs are magnified by convex design of the clear SAN plastic barrel Protection scale is printed in both Celsius and Fahrenheit Beyond 70 percent anti-freeze cooling and corrosion effectiveness is reduced One-piece bulb and neoprene dip tubThis large professional-size tester is accurate at all temperatures and is used to test coolant hot or cold. It has a special feature the 6th disc shows overprotection and a loss of cooling efficiency. Made with the durability to last!