24 Jul Set of 2 || KIMBLE Kontes Pear-Shaped Flask, 75mL, ST 14/20 #294250-0075
Single-neck Standard Taper 14/20 outer/female joint. Small white label spot. Good glassware is ageless....
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24 Jul Set of 2 || Round-bottom flasks with MALE 24/40 ground glass inner joint, 75ml
So, not for everybody. There are several ways they could be misused by the inexpert (i.e., do not heat a closed system). If you need single-neck round-bottom flasks, there is a greater than 99% chance this pair is NOT what you want....