Holdon Mini Clip Black 250pcs Pack

They are useful for the Stairville Acoustic curtain but they are hard too close over the material and the corresponding Spannfix 4mm pieces don't actually fit in the holes! I think that is as much a design flaw in the Spannfix as in the Holdon mini's, and although there are only so many ways to attach such items, I think they could have done a better job in design that. Solid material, tough with a tight grip on the fabric once closed properly, but difficult to close over thick acoustic fabric.

After you get used to "breaking" it to separate the parts it works fine. A little tricky to get it on the first couple of times though