The module corresponds in design and function to the module holder for glass devices with ST29. However, the extended version is particularly suitable for easily hanging particularly large round-bottomed flasks or separating funnels, for example.

Note on joint tolerances for ST29
Maximum outside diameter at the narrowest point of the cone joint: 31.4 mm (larger diameters are too wide for the holder and cannot be held)
Minimum outer diameter at the widest point of the cone joint: 32.8 mm (smaller diameters are too narrow for the holder and would fall out)