Features:Temperature compensation function,automatically adjust itself to correct temperature discrepancies while being used. Quickly and accurately test the glycol concentration of engine coolants or other anti-freezesolutions. Decorated with soft and comfortable anti-slip rubber, easy to grip. Small size and lightweight make it a portable one, very convenient. Applied to automatic cars/vehicles battery antifreeze fluids glycol testing and analyzing. Specification: Condition: 100% Brand New Urea Concentration: 30%-35% Ethylene Glycol: -50 ~ 0 Propylene Glycol: -50 ~ 0 Cleaning Fluid: -40 ~ 0 Battery Fluid: 1.10 - 1.40sg Material: Metal Color: Shown as Picture Length:16cm/6.3in Weight: Approx. 232g/8.18oz Package list: 1 * Antifreeze Refractometer Note: 1. Due to the difference between monitors and light effect, the pictures may not reflect the actual color of the item. Please take the real one as standard. 2. Please allow slight error due to manual measurement. Thanks for your understanding.