Product review (1 stars): It works but still feel a little ripped off
It worked, sort of.  I got lint out of the dryer flex vent.

I bought the kit because the technician, who replaced a heating element, told me I needed it.

The vacuum cleaner attachment is flimsy and partially collapsed but still works.  You stick it down the vent, lint sticks to the end and then you pull the attachment out, remove the lint and repeat.  It doesn't suck lint up the hose.  It is also rather difficult to feed.

I could only feed the brush in about a foot.

Mostly the kit worked because I had a strong Shop Vac with a really long hose.

It is just a really flimsy, poorly made, vastly overpriced kit.