Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

Features:-Durable and built to last long-Uses ambient light only which means battery or power source is not required.-Heavy-duty and lightweight with its aluminum construction.-Equipped with scale measurement which provides direct reading，-Accurate testing results guaranteed-Cushioned with soft & comfortable non-slip rubber-Extremely easy-to-use and calibrate-Approved by strict quality and safety standards -Made with the highest and finest quality of aluminum & rubber that makes it lightweight Specifications:-Measuring Range: -Ethylene Glycol: -60°C-0°C***0-66.6% -Propylene Glycol: -50°C-0°C***0-62.4% -Battery Fluids: 1.100-1.400sg -Resolution Factor: -Ethylene Glycol: 5°C -Propylene Glycol: 5°C -Battery Fluids: 0.01sg -(ATC)Temperature Compensation Range: 10°C -30°C Package Included:-Portable Refractometer-Mini Screw Driver-Suction tube-Soft protective carrying case-English User Manual