Labasics 1 Pack Glass Hex Head Hollow Stopper, Hexagonal Stopper for 14/20 Outer Joint with Closed Bottom

14/20 Outer Joint Hollow glass stopper; maximum withstand temperature 250°C Hexagon Head Stopper; convenient to clean and rotate, and side grooves can prevent slippage Borosilicate Glass; heavy duty design; reusable and premium quality Warranty: Labasics 1-year limited warranty; if received damaged, please contact us immediately; we will solve it until satisfied