A fine blade for mowing meadows, soft weeds and lawns.
A longer blade will allow you to move forward further with each stroke of the scythe. This however will result in the mower having to move the weight of more grass across the stroke. So a compromise has to be made between speed of mowing and the weight the mower is able/willing to move.
In lighter meadow grasses and lawns a longer blade is preferable, but a shorter blade may be preferred in heavier grasses or in confined areas eg small lawns, paths.
If you are mowing large areas of lighter grasses, you may be interested in these longer meadow mowing blades.