The 2.5L flask specifications are as follows:
Base diameter: 6.50 in. [16.51 cm]
Neck diameter: 3.00 in. [7.62 cm]
Height without cap: 10.75 in. [27.31 cm]
Height with cap: 12.75 in. [32.39 cm]
Working volume: 1 L
Net weight: 0.02 lbs. [0.008 Kg]
The 300mL full baffle flask, product Z710792, specifications are as follows:
Base diameter: 3.25 in. [8.25 cm]
Neck diameter: 1.75 in. [4.45 cm]
Height without cap: 6.00 in. [15.24 cm]
Height with cap: 7.25 in. [18.42 cm]
Working volume: 100 mL
Net weight: 0.01 lbs. [0.004 Kg]