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% anti-freeze, cooling and corrosion effectiveness is reduced
• One-piece bulb and neoprene dip tub

Designed to test ethylene glycol based coolant, this professional disk-type tool also incldes an additional disk to show overprotection and a loss of cooling efficiency. Made with the durability to last!