About this item

• Joint compatibility: standard taper ground-glass joints 24/40, 19/22, 14/20; mates with common condensers, flasks and adapters
• Pack options: single unit or 5-pack available; each item labeled with joint size for inventory and ordering
• Stopper styles: penny-head stopper for fingertip removal; hollow ground-glass stopper for reduced mass or internal access/venting