Sixty grams is exactly half a cup of all-purpose flour. It is one of the few weights that lands cleanly on a standard measure, which makes it a common building block in recipes written to scale up and down.
Across the full chart above, this same weight fills 0.71 cups of cocoa powder but only 0.18 cups of honey. Cocoa is the lightest ingredient here and honey the heaviest, and that spread is the whole reason the ingredient has to be named.
Keep the original 60 gram weight whenever the recipe depends on an exact ratio between flour and liquid.