20PCS 25ml Glass Test Tubes with Cork Stoppers20?80mm Round Bottom Test Tube for Scientific TestsCandyBath SaltCultivated Plants

Description of Goods Before purchasing,you should pay attention to the size of the round bottom test tube. Package contains 20 clear glass test tubes with 20 cork stoppers. Warm tips:Manual measurement,please allow slight errors on size. Glass test tubes cork stopper is insert and take out easily,perfectly fit the tube open and have good sealing to isolate air and liquid,prevent the content inside leaking out. Capacity:25ml volumetric test tube. The INNER diameter of tube is 0.7in.