EQ Acoustics Flexi Fit 32 set

They worked for my 30x30 cm foam panels when mounted on the ceiling, even though it's not recommended in the instructions, but most of my panels and foam "bass trap" just ended up falling down when mounted to walls. The adhesive peels off of the strip, making it useless and in need of replacement. It's a total pain to then peel the adhesive off of the walls, leaving my thumbs so sore that I had to do it over multiple days when moving house.

I ended up having to nail most panels to the wall since they fell down over an over, even though I often used more strips than recommended. They're probably designed for very thin foam panels, so you should just save your money and get some real broadband absorbers instead.

It you still want to give these a try; 1 strip is cut into 4 pieces, so 1 strip is enough for 1 small panel.

Bought these for use with EQ Acoustics smallest acoustic foam pads, plus diffusers and home made bass traps.

For the foam pads they are ok, since they are very light. Anything even remotely heavier will fall off the walls. Thomann recommends these with the diffusers also - and they don't hold up (had to use extra glue plus nails).
Home made corner traps are not much heavier than the foam pads, but they also fall off the walls without extra glue.

It's a nice idea with the strips, but the glue is too weak. Handling and placement was easy though.

If you are gonna use it only with super light material they are ok. But feels too expensive for what you get.