About this item

• Product Design: product DesignRound bottomed Schlenk flask with 24/40 center joint and 0-4 mm valve
• Material Quality: made of Heavy Wall Borosilicate Glass; reusable and high quality
• Manufacturing Craftsmanship: perfect handcraft glass; made by hand blowing to ensure achieving the best performance
• Quality Assurance & Support: StonyLab ensures high quality products and premium customer service; if received damaged, please contact us immediately; we will solve it until satisfied