LG VK7918NNA Owner's Manual page 14

This Sani Punch nozzle is for effective cleaning of beds and blankets to remove mites and dust.
Effective cleaning
When using on the bed
Lay out the blanket and vacuum it on the bed
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Bed & blanket
Bulky & heavy blanket
Light blanket & sheet
When using on the floor
It is easier to clean a light blanket or sheetby
pushing the nozzle in the direction of the arrow.
To increase cleaning efficiency for light blankets,
lay on top of a bulky blanket and then clean.