Specification:
Material: cork
Outer diameter: 80mm/3.1in, 100mm/3.9in,110mm/4.3in,120mm/4.7in,140mm/5.5in,160mm/6.3in(Optional)
Height:30 mm /1.2in
Weight: Approx.30g~60g/1.1oz~2.1oz

Package list:
1 x Laboratory Flask Cork Stand

Features:
Select high-quality, environment-friendly and high-density synthetic cork
The flask holder is pressed by high temperature and pressure, and the thickness is 30mm
Acid and alkali resistance, resistance, heat resistance, heat insulation
Good elasticity,strong friction coefficient,make sure the flask can place stably
Suitable for all kinds of round bottom glassware, convenient and practical