Features:Select high-quality, environment-friendly and high-density synthetic corkThe flask holder is pressed by high temperature and pressure, and the thickness is 30mm.Acid and alkali resistance, heat resistance, heat insulation Good elasticity,strong friction coefficient,make sure the flask can place stablySuitable for all kinds of round bottom glassware, convenient and practical
Specification:Material: corkOuter diameter: 80mm/3.1in, 100mm/3.9in,110mm/4.3in,120mm/4.7in,140mm/5.5in,160mm/6.3in(Optional)Height:30 mm /1.2inWeight: Approx.30g~60g/1.1oz~2.1oz
Package list:1 x Laboratory Flask Cork Stand