Dremel Dust Blower Fan Attachment from banggood.com - No2

This is a video about the efficiency of a dust blower from bangood.com.
www.banggood.com/Dust-Blower-w...
The same drilling with and without the blower. This blower is enough if you wish to blow dust while drilling or grinding. However, if you only wish to blow large amount of dust (and not only dust), without drilling, you need a bigger fan, for example from some CPU cooler.
Sorry for the focus.

[@MrIgottap]

Perfect, no song and dance dog and pony crap. Just a quick after vs before demo. Thank you, ordering my own now.