round bottom 250 mL 1 flask 19/22 choose from

PYREX 4320B-250
or
KIMAX Cat. #25277

Kimble® 25277-250 KIMAX® 250mL Round Bottom Boiling Flask with Short Neck & 19/22 [ST] Joint

Item Number:F3010-5
Manufacturer Part No:25277-250


Compare with:

ecatalog.corning.com/life-sciences/b2b/US/en/General-Labware/Flasks/Flasks,-Glass/PYREX%C2%AE-Short-Neck-Boiling-Flask,-Round-Bottom,-Standard-Taper-Joint/p/4320B-250

https://www.capitolscientific.com/Kimble-25277-250-KIMAX-250mL-Round-Bottom-Boiling-Flask-with-Short-Neck-19-22-ST-Joint

https://www.ebay.com/itm/128155961853