Reaction Flask Top, 4" ID Flange, Borosilicate Glass, 29/42 Thermometer, 29/42 Center, 24/40 Side Standard Taper Joint, Three Neck with a Flat Ground Flange, For Cylindrical and Spherical Flasks Having the Same ID
| Flange Diameter | : | 4" ID |
| Material | : | Borosilicate Glass |
| Stopper Type | : | Standard Taper |
| Center Standard Taper Joint | : | 29/42 |
| Side Standard Taper Joint | : | 24/40 |
| Thermometer Standard Taper Joint | : | 29/42 |