Features: The Victor Coolant Tester is a simple to use device that helps you to check your radiator coolant This Coolant Tester quickly checks the specific gravity of your engine coolant water and shows you whether you have enough anti-freeze (Ethylene Glycol) or Corrosion Inhibitor in your cooling system. Your engines cooling system is a vital part of your engine. Without water, your engine will quickly overheat and seize. This is a common cause of blown head gaskets. Today's aluminium cylinder heads and engine blocks have the added problem of the water in your cooling system can corrode the aluminium and cause severe damage to your engine. Coolant additives prevent corrosion as well as preventing your coolant from freezing and cracking the block. Material: ABS Package size: 23cm x 15cm x 5cm (9.06in x 5.91in x 1.97in) Weight:78g Color:As shown Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. The Victor Coolant Tester lets you: Check the % of the special coolant additives in your water. Check that your cooling system will not freeze in winter. Check to make sure your coolant is not corroding your engine. Your coolant also lubricates the water pump. Great tuning aid for the professional mechanic or the DIY mechanic at home. Package Content: 1 x Water Tester Test