beer hydrometer have undergone heavy product testing for quality, stable performance and long service life.hydrometer use high quality materials.Free of mercury, lead and other harmful compounds, making your brew more and .Triple hydrometer has clear scale and accurate measurement.Distinguish by color, so that you can observe the value better, more intuitively and clearly.3 in 1 Design: Convenient 3 in 1 tool allows you to quickly and accurately measure density, alcohol and brix at the same time.2 hydrometers and 2 measuring cylinders are convenient to measure.type: Combo Kit of Triple-Scale Hydrometer Package Includes: 2 x Triple scales hydrometer 1 x 250ml Clear plastic cylinder test jar 1 x Transparent glass cylinder test jar 1 x Stainless steel brush 2 x Hydrometer container 1 x Microfiber cleaning cloth 1 x Instruction sheet with scale conversion chart 1 x Storage bag Product Name: Combo Kits of Triple-Scale Hydrometer Hydrometer Specifications 1. Gravity: 0.99 - 1.16 2. Potential Alcohol By Volume: 0%-20% 3. Brix/: 0-35 Uses: 1. Measure the wort concentration in beer 2. Measuring sugar content in wine Colour:As shown :Glass Package Contents: 1 set x wine making supplies Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing.The measurement allowed error is +/- 1-3cm.