All refractometers have a metal body w/ cushioned eyepiece, a rubber hand grip, and a calibration screen. Included with each is a calibration screwdriver, a plastic pipette and a carrying case.Glycol and brake fluid-50? to 0°1.15 to 1.3 S/GFor brake fluid and ethylene and propylene glycolSpecifications:Resolution: 5°, 0.01 S/GLength: 6.2"Depth: 1.8"Weight: 7 oz.Includes:Calibration ScrewdriverPlastic PipetteCarrying CaseAll returns on General Tools & Instruments products have a 20% restock fee.General Tools & Instruments REF402 Hand-Held Refractometer - Glycol & Brake Fluid