Penny head hollow glass stopper with closed bottom, grounded, used for any apparatus with 24/40 standard ground taper outer joint.
- Penny head hollow glass stopper,with closed bottom and taper ground inner joint.
- Made of high quality heavy wall borosilicate glass tubing by hand-blowing
- Used to close glassware items like flasks,separatory funnels,cylinders
- With 24/40 inner joint
- 100% 90 DAY MONEY BACK GUARANTEE
- Penny head hollow glass stopper,with closed bottom and taper ground inner joint.
- Made of high quality heavy wall borosilicate glass tubing by hand-blowing
- Used to close glassware items like flasks,separatory funnels,cylinders
- With 24/40 inner joint
- 100% 90 DAY MONEY BACK GUARANTEE
